# What is 18/7-3/11?

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

• 17777
• 2 2377
• 2.2987 (rounded to 4 decimals)

## Step by step solution

Subtract

187 - 311 = 17777

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
2. ### Subtract

• 19877 - 2177
• 198 - 2177
• 17777

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

Simplify

• 17777
• 2 2377
1. ### Reduce fraction to its lowest terms

The greatest common divisor of 177 and 77 is 1, the fraction 17777 cannot be further simplified or reduced to lowest terms

2. ### Convert improper fraction 17777 to mixed number

• 17777
• 2 2377

177 divided by 77 is 2 with a remainder of 23