Solutions by everydaycalculation.com

1^{st} number: 1 1/20, 2^{nd} number: 30/50

2120 - 3050 is 920.

- Find the least common denominator or LCM of the two denominators:

LCM of 20 and 50 is**100**

Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,

2120 = 21 × 520 × 5 = 105100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,

3050 = 30 × 250 × 2 = 60100 - Subtract the two like fractions:

105100 - 60100 = 105 - 60100 = 45100 - After reducing the fraction, the answer is 920

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:

Android and iPhone/ iPad

Related: ^{42}/_{20}-^{30}/_{50} ^{21}/_{20}-^{60}/_{50} ^{21}/_{40}-^{30}/_{50} ^{63}/_{20}-^{30}/_{50} ^{21}/_{20}-^{90}/_{50} ^{21}/_{60}-^{30}/_{50}

© everydaycalculation.com