What is 3/18-9/8?

How much is 318 minus 98. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

  • - 2324
  • 0.9583 (rounded to 4 decimals)

Step by step solution

Subtract

318 - 98 = - 6972

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

    Multiples of 18 are   18, 36, 54, 72 ....etc

    Multiples of 8 are   8, 16, 24, 32, 40, 48, 56, 64, 72 ...etc

    The LCM of 18 and 8 is 72. So, the common denominator of 318 and 98 is 72. Now change the fractions into equivalent fractions with common denominator

    • 318 - 98
    • 3 * 418 * 4 - 9 * 98 * 9
    • 1272 - 8172
  2. Subtract

    • 1272 - 8172
    • 12 - 8172
    • - 6972

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

Simplify

  • - 6972
  • - 2324
  1. Reduce fraction to its lowest terms

    • - 6972
    • - 69 ÷ 372 ÷ 3
    • - 2324

    The greatest common divisor of 69 and 72 is 3, the fraction - 6972 can be simplified or reduced to lowest terms by dividing the numerator and denominator by 3.