What is 21/19-18/3?

How much is 2119 minus 183. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

  • - 9319
  • - 4 1719
  • 4.8947 (rounded to 4 decimals)

Step by step solution

Subtract

2119 - 183 = - 27957

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

    Multiples of 19 are   19, 38, 57 ....etc

    Multiples of 3 are   3, 6, 9, 12, 15, 18, 21, 24, ..., 57 ...etc

    The LCM of 19 and 3 is 57. So, the common denominator of 2119 and 183 is 57. Now change the fractions into equivalent fractions with common denominator

    • 2119 - 183
    • 21 * 319 * 3 - 18 * 193 * 19
    • 6357 - 34257
  2. Subtract

    • 6357 - 34257
    • 63 - 34257
    • - 27957

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

Simplify

  • - 27957
  • - 9319
  • - 4 1719
  1. Reduce fraction to its lowest terms

    • - 27957
    • - 279 ÷ 357 ÷ 3
    • - 9319

    The greatest common divisor of 279 and 57 is 3, the fraction - 27957 can be simplified or reduced to lowest terms by dividing the numerator and denominator by 3.

  2. Convert improper fraction 9319 to mixed number

    • - 9319
    • - 4 1719

    93 divided by 19 is 4 with a remainder of 17