Subtract 80/49 from 42/10, Solve 4 2/10

Subtract 80/49 from 42/10

1^st number: 4 2/10, 2^nd number: 1 31/49

42/10 - 80/49 is 629/245.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 49 is 490

Next, find the equivalent fraction of both fractional numbers with denominator 490
For the 1st fraction, since 10 × 49 = 490,
42/10 = 42 × 49/10 × 49 = 2058/490
Likewise, for the 2nd fraction, since 49 × 10 = 490,
80/49 = 80 × 10/49 × 10 = 800/490
Subtract the two like fractions:
2058/490 - 800/490 = 2058 - 800/490 = 1258/490
After reducing the fraction, the answer is 629/245
In mixed form: 2139/245

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