What is 21/2+6/8?

How much is 212 plus 68. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

  • 454
  • 11 14
  • 11.25

Step by step solution

Add

212 + 68 = 908

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

    Multiples of 2 are   2, 4, 6, 8 ....etc

    Multiples of 8 are   8 ...etc

    The LCM of 2 and 8 is 8. So, the common denominator of 212 and 68 is 8. Now change the fractions into equivalent fractions with common denominator

    • 212 + 68
    • 21 * 42 * 4 + 6 * 18 * 1
    • 848 + 68
  2. Add

    • 848 + 68
    • 84 + 68
    • 908

    Add the numerators and place the sum over the common denominator.

Simplify

  • 908
  • 454
  • 11 14
  1. Reduce fraction to its lowest terms

    • 908
    • 90 ÷ 28 ÷ 2
    • 454

    The greatest common divisor of 90 and 8 is 2, the fraction 908 can be simplified or reduced to lowest terms by dividing the numerator and denominator by 2.

  2. Convert improper fraction 454 to mixed number

    • 454
    • 11 14

    45 divided by 4 is 11 with a remainder of 1