Subtract integers: 1 - 5 = ?

The executed operation (with integers):
1 - 5

Perform the operation with integers:

1 - 5 =


- 4

Rewrite the fraction

As a negative improper fraction (denominator = 1):

- 4 = - 4/1

As a percentage:

- 4 =


- 4 × 100/100 =


( - 4 × 100)/100 =


- 400/100 =


- 400%

>> Convert fractions to percentages, online calculator


The final answer:
:: written in three ways ::

As a negative integer number:
1 - 5 = - 4

As a negative improper fraction (denominator = 1):
1 - 5 = - 4/1

As a percentage:
1 - 5 = - 400%

How to add the ordinary fractions:
11/9 + 12/7

Writing numbers: comma ',' used as a thousands separator; point '.' used as a decimal mark;

Symbols: / fraction bar; ÷ divide; × multiply; + plus; - minus; = equal; ≈ approximation;

Add ordinary fractions, online calculator

The latest added fractions

1 - 5 = ? Jun 03 21:36 UTC (GMT)
- 14/312,257 + 8 = ? Jun 03 21:36 UTC (GMT)
10/13 - 41/37 + 9 - 14/7 = ? Jun 03 21:36 UTC (GMT)
- 3 + 2/5 - 2 + 4/7 = ? Jun 03 21:35 UTC (GMT)
- 15 + 125/16 = ? Jun 03 21:35 UTC (GMT)
- 1/4 - 1/6 = ? Jun 03 21:35 UTC (GMT)
13/10 - 13/5 = ? Jun 03 21:35 UTC (GMT)
3/16 - 1/8 = ? Jun 03 21:35 UTC (GMT)
- 20/148 - 33,753/6 = ? Jun 03 21:35 UTC (GMT)
3/100 + 4/10 = ? Jun 03 21:32 UTC (GMT)
53/10,056 - 1,042/3 = ? Jun 03 21:32 UTC (GMT)
- 5/13 - 8/16 - 17/444 + 945/8 = ? Jun 03 21:32 UTC (GMT)
- 12/4 - 6/16 - 24/5 = ? Jun 03 21:32 UTC (GMT)
see more... added fractions

How to: Adding ordinary (simple, common) math fractions. Steps.

There are two cases regarding the denominators when we add ordinary fractions:

  • A. the fractions have like denominators;
  • B. the fractions have unlike denominators.

A. How to add ordinary fractions that have like denominators?

  • Simply add the numerators of the fractions.
  • The denominator of the resulting fraction will be the common denominator of the fractions.
  • Reduce the resulting fraction.

An example of adding ordinary fractions that have like denominators, with explanations

  • 3/18 + 4/18 + 5/18 = (3 + 4 + 5)/18 = 12/18;

  • We simply added the numerators of the fractions: 3 + 4 + 5 = 12;
  • The denominator of the resulting fraction is: 18;
  • The resulting fraction is being reduced: 12/18 = (12 ÷ 6)/(18 ÷ 6) = 2/3.

  • How to reduce (simplify) the common fraction 12/18?

B. To add fractions with different denominators (unlike denominators), build up the fractions to the same denominator. How is it done?

  • 1. Reduce the fractions to the lowest terms (simplifying).

  • 2. Calculate the least common multiple, LCM, of all the fractions' new denominators:

    • LCM is going to be the common denominator of the added fractions.
    • Factor all the new denominators of the reduced fractions (run the prime factorization).
    • The least common multiple, LCM, is the product of all the unique prime factors of the denominators, taken by the largest exponents.
    • Calculate LCM, the least common multiple of numbers.

  • 3. Calculate each fraction's expanding number:

    • The expanding number is the non-zero number that will be used to multiply both the numerator and the denominator of each fraction, in order to build all the fractions up to the same common denominator.
    • Divide the least common multiple, LCM, calculated above, by each fraction's denominator, in order to calculate each fraction's expanding number.
  • 4. Expand each fraction:

    • Multiply each fraction's both numerator and denominator by expanding number.
    • At this point, fractions are built up to the same denominator.
  • 5. Add the fractions:

    • In order to add all the fractions simply add all the fractions' numerators.
    • The end fraction will have as a denominator the least common multiple, LCM, calculated above.
  • 6. Reduce the end fraction to the lowest terms, if needed.

... Read the rest of this article, here: How to add ordinary (common) fractions?

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