# What is 3/18-9/8?

How much is 318 minus 98. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

• - 2324
• 0.9583 (rounded to 4 decimals)

## Step by step solution

Subtract

318 - 98 = - 6972

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

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

Multiples of 8 are   8, 16, 24, 32, 40, 48, 56, 64, 72 ...etc

The LCM of 18 and 8 is 72. So, the common denominator of 318 and 98 is 72. Now change the fractions into equivalent fractions with common denominator

• 318 - 98
• 3 * 418 * 4 - 9 * 98 * 9
• 1272 - 8172
2. ### Subtract

• 1272 - 8172
• 12 - 8172
• - 6972

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

Simplify

• - 6972
• - 2324
1. ### Reduce fraction to its lowest terms

• - 6972
• - 69 ÷ 372 ÷ 3
• - 2324

The greatest common divisor of 69 and 72 is 3, the fraction - 6972 can be simplified or reduced to lowest terms by dividing the numerator and denominator by 3.