# What is 10/5-11/18?

How much is 105 minus 1118. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

• 2518
• 1 718
• 1.3889 (rounded to 4 decimals)

## Step by step solution

Subtract

105 - 1118 = 12590

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

Multiples of 5 are   5, 10, 15, 20, 25, 30, 35, 40, ..., 90 ....etc

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

The LCM of 5 and 18 is 90. So, the common denominator of 105 and 1118 is 90. Now change the fractions into equivalent fractions with common denominator

• 105 - 1118
• 10 * 185 * 18 - 11 * 518 * 5
• 18090 - 5590
2. ### Subtract

• 18090 - 5590
• 180 - 5590
• 12590

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

Simplify

• 12590
• 2518
• 1 718
1. ### Reduce fraction to its lowest terms

• 12590
• 125 ÷ 590 ÷ 5
• 2518

The greatest common divisor of 125 and 90 is 5, the fraction 12590 can be simplified or reduced to lowest terms by dividing the numerator and denominator by 5.

2. ### Convert improper fraction 2518 to mixed number

• 2518
• 1 718

25 divided by 18 is 1 with a remainder of 7