# What is 11/18-15/10?

How much is 1118 minus 1510. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

• - 89
• 0.8889 (rounded to 4 decimals)

## Step by step solution

Subtract

1118 - 1510 = - 8090

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

Multiples of 18 are   18, 36, 54, 72, 90 ....etc

Multiples of 10 are   10, 20, 30, 40, 50, 60, 70, 80, 90 ...etc

The LCM of 18 and 10 is 90. So, the common denominator of 1118 and 1510 is 90. Now change the fractions into equivalent fractions with common denominator

• 1118 - 1510
• 11 * 518 * 5 - 15 * 910 * 9
• 5590 - 13590
2. ### Subtract

• 5590 - 13590
• 55 - 13590
• - 8090

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

Simplify

• - 8090
• - 89
1. ### Reduce fraction to its lowest terms

• - 8090
• - 80 ÷ 1090 ÷ 10
• - 89

The greatest common divisor of 80 and 90 is 10, the fraction - 8090 can be simplified or reduced to lowest terms by dividing the numerator and denominator by 10.