# What is 2/21-22/6?

How much is 221 minus 226. Step by step solution expressed as a proper or improper fraction, mixed number and decimal form.

• - 257
• - 3 47
• 3.5714 (rounded to 4 decimals)

## Step by step solution

Subtract

221 - 226 = - 15042

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

Multiples of 21 are   21, 42 ....etc

Multiples of 6 are   6, 12, 18, 24, 30, 36, 42 ...etc

The LCM of 21 and 6 is 42. So, the common denominator of 221 and 226 is 42. Now change the fractions into equivalent fractions with common denominator

• 221 - 226
• 2 * 221 * 2 - 22 * 76 * 7
• 442 - 15442
2. ### Subtract

• 442 - 15442
• 4 - 15442
• - 15042

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

Simplify

• - 15042
• - 257
• - 3 47
1. ### Reduce fraction to its lowest terms

• - 15042
• - 150 ÷ 642 ÷ 6
• - 257

The greatest common divisor of 150 and 42 is 6, the fraction - 15042 can be simplified or reduced to lowest terms by dividing the numerator and denominator by 6.

2. ### Convert improper fraction 257 to mixed number

• - 257
• - 3 47

25 divided by 7 is 3 with a remainder of 4