What is 10/10-21/15?

How much is 1010 minus 2115. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

  • - 25
  • 0.4

Step by step solution

Subtract

1010 - 2115 = - 1230

  1. Find common denominator by finding the Least Common Multiple(LCM)

    Multiples of 10 are   10, 20, 30 ....etc

    Multiples of 15 are   15, 30 ...etc

    The LCM of 10 and 15 is 30. So, the common denominator of 1010 and 2115 is 30. Now change the fractions into equivalent fractions with common denominator

    • 1010 - 2115
    • 10 * 310 * 3 - 21 * 215 * 2
    • 3030 - 4230
  2. Subtract

    • 3030 - 4230
    • 30 - 4230
    • - 1230

    Subtract the numerators and place the difference over the common denominator.

Simplify

  • - 1230
  • - 25
  1. Reduce fraction to its lowest terms

    • - 1230
    • - 12 ÷ 630 ÷ 6
    • - 25

    The greatest common divisor of 12 and 30 is 6, the fraction - 1230 can be simplified or reduced to lowest terms by dividing the numerator and denominator by 6.