# What is 18/7+3/11?

How much is 187 plus 311. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

• 21977
• 2 6577
• 2.8442 (rounded to 4 decimals)

## Step by step solution

187 + 311 = 21977

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

Multiples of 7 are   7, 14, 21, 28, 35, 42, 49, 56, ..., 77 ....etc

Multiples of 11 are   11, 22, 33, 44, 55, 66, 77 ...etc

The LCM of 7 and 11 is 77. So, the common denominator of 187 and 311 is 77. Now change the fractions into equivalent fractions with common denominator

• 187 + 311
• 18 * 117 * 11 + 3 * 711 * 7
• 19877 + 2177

• 19877 + 2177
• 198 + 2177
• 21977

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

Simplify

• 21977
• 2 6577
1. ### Reduce fraction to its lowest terms

The greatest common divisor of 219 and 77 is 1, the fraction 21977 cannot be further simplified or reduced to lowest terms

2. ### Convert improper fraction 21977 to mixed number

• 21977
• 2 6577

219 divided by 77 is 2 with a remainder of 65