# What is 1/15-12/13?

How much is 115 minus 1213. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

• - 167195
• 0.8564 (rounded to 4 decimals)

## Step by step solution

Subtract

115 - 1213 = - 167195

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

Multiples of 15 are   15, 30, 45, 60, 75, 90, 105, ..., 195 ....etc

Multiples of 13 are   13, 26, 39, 52, 65, 78, 91, ..., 195 ...etc

The LCM of 15 and 13 is 195. So, the common denominator of 115 and 1213 is 195. Now change the fractions into equivalent fractions with common denominator

• 115 - 1213
• 1 * 1315 * 13 - 12 * 1513 * 15
• 13195 - 180195
2. ### Subtract

• 13195 - 180195
• 13 - 180195
• - 167195

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

Simplify

• - 167195
1. ### Reduce fraction to its lowest terms

The greatest common divisor of 167 and 195 is 1, the fraction - 167195 cannot be further simplified or reduced to lowest terms