What is 17/20-16/30?

How much is 1720 minus 1630. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

  • 1960
  • 0.3167 (rounded to 4 decimals)

Step by step solution

Subtract

1720 - 1630 = 1960

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

    Multiples of 20 are   20, 40, 60 ....etc

    Multiples of 30 are   30, 60 ...etc

    The LCM of 20 and 30 is 60. So, the common denominator of 1720 and 1630 is 60. Now change the fractions into equivalent fractions with common denominator

    • 1720 - 1630
    • 17 * 320 * 3 - 16 * 230 * 2
    • 5160 - 3260
  2. Subtract

    • 5160 - 3260
    • 51 - 3260
    • 1960

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

Simplify

  • 1960
  1. Reduce fraction to its lowest terms

    The greatest common divisor of 19 and 60 is 1, the fraction 1960 cannot be further simplified or reduced to lowest terms