# What is 23/8-21/20?

How much is 238 minus 2120. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

• 7340
• 1 3340
• 1.825

## Step by step solution

Subtract

238 - 2120 = 7340

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

Multiples of 8 are   8, 16, 24, 32, 40 ....etc

Multiples of 20 are   20, 40 ...etc

The LCM of 8 and 20 is 40. So, the common denominator of 238 and 2120 is 40. Now change the fractions into equivalent fractions with common denominator

• 238 - 2120
• 23 * 58 * 5 - 21 * 220 * 2
• 11540 - 4240
2. ### Subtract

• 11540 - 4240
• 115 - 4240
• 7340

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

Simplify

• 7340
• 1 3340
1. ### Reduce fraction to its lowest terms

The greatest common divisor of 73 and 40 is 1, the fraction 7340 cannot be further simplified or reduced to lowest terms

2. ### Convert improper fraction 7340 to mixed number

• 7340
• 1 3340

73 divided by 40 is 1 with a remainder of 33