What is 3/20-7/24?

How much is 320 minus 724. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

  • - 17120
  • 0.1417 (rounded to 4 decimals)

Step by step solution

Subtract

320 - 724 = - 17120

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

    Multiples of 20 are   20, 40, 60, 80, 100, 120 ....etc

    Multiples of 24 are   24, 48, 72, 96, 120 ...etc

    The LCM of 20 and 24 is 120. So, the common denominator of 320 and 724 is 120. Now change the fractions into equivalent fractions with common denominator

    • 320 - 724
    • 3 * 620 * 6 - 7 * 524 * 5
    • 18120 - 35120
  2. Subtract

    • 18120 - 35120
    • 18 - 35120
    • - 17120

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

Simplify

  • - 17120
  1. Reduce fraction to its lowest terms

    The greatest common divisor of 17 and 120 is 1, the fraction - 17120 cannot be further simplified or reduced to lowest terms