# What is 21/17-8/27?

How much is 2117 minus 827. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

• 431459
• 0.939 (rounded to 4 decimals)

## Step by step solution

Subtract

2117 - 827 = 431459

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

Multiples of 17 are   17, 34, 51, 68, 85, 102, 119, ..., 459 ....etc

Multiples of 27 are   27, 54, 81, 108, 135, 162, ..., 459 ...etc

The LCM of 17 and 27 is 459. So, the common denominator of 2117 and 827 is 459. Now change the fractions into equivalent fractions with common denominator

• 2117 - 827
• 21 * 2717 * 27 - 8 * 1727 * 17
• 567459 - 136459
2. ### Subtract

• 567459 - 136459
• 567 - 136459
• 431459

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

Simplify

• 431459
1. ### Reduce fraction to its lowest terms

The greatest common divisor of 431 and 459 is 1, the fraction 431459 cannot be further simplified or reduced to lowest terms