Subtract 6/84 from 90/50, Solve 1 40/50

Subtract 6/84 from 90/50

1^st number: 1 40/50, 2^nd number: 6/84

90/50 - 6/84 is 121/70.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 84 is 2100

Next, find the equivalent fraction of both fractional numbers with denominator 2100
For the 1st fraction, since 50 × 42 = 2100,
90/50 = 90 × 42/50 × 42 = 3780/2100
Likewise, for the 2nd fraction, since 84 × 25 = 2100,
6/84 = 6 × 25/84 × 25 = 150/2100
Subtract the two like fractions:
3780/2100 - 150/2100 = 3780 - 150/2100 = 3630/2100
After reducing the fraction, the answer is 121/70
In mixed form: 151/70

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