What is 1/19-7/20?

How much is 119 minus 720. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

  • - 113380
  • 0.2974 (rounded to 4 decimals)

Step by step solution

Subtract

119 - 720 = - 113380

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

    Multiples of 19 are   19, 38, 57, 76, 95, 114, 133, ..., 380 ....etc

    Multiples of 20 are   20, 40, 60, 80, 100, 120, 140, ..., 380 ...etc

    The LCM of 19 and 20 is 380. So, the common denominator of 119 and 720 is 380. Now change the fractions into equivalent fractions with common denominator

    • 119 - 720
    • 1 * 2019 * 20 - 7 * 1920 * 19
    • 20380 - 133380
  2. Subtract

    • 20380 - 133380
    • 20 - 133380
    • - 113380

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

Simplify

  • - 113380
  1. Reduce fraction to its lowest terms

    The greatest common divisor of 113 and 380 is 1, the fraction - 113380 cannot be further simplified or reduced to lowest terms