# 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

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

• 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