# What is 21/4-9/9?

How much is 214 minus 99. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

• 174
• 4 14
• 4.25

## Step by step solution

Subtract

214 - 99 = 15336

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

Multiples of 4 are   4, 8, 12, 16, 20, 24, 28, 32, 36 ....etc

Multiples of 9 are   9, 18, 27, 36 ...etc

The LCM of 4 and 9 is 36. So, the common denominator of 214 and 99 is 36. Now change the fractions into equivalent fractions with common denominator

• 214 - 99
• 21 * 94 * 9 - 9 * 49 * 4
• 18936 - 3636
2. ### Subtract

• 18936 - 3636
• 189 - 3636
• 15336

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

Simplify

• 15336
• 174
• 4 14
1. ### Reduce fraction to its lowest terms

• 15336
• 153 ÷ 936 ÷ 9
• 174

The greatest common divisor of 153 and 36 is 9, the fraction 15336 can be simplified or reduced to lowest terms by dividing the numerator and denominator by 9.

2. ### Convert improper fraction 174 to mixed number

• 174
• 4 14

17 divided by 4 is 4 with a remainder of 1