Subtract 7/18 from 90/35, Solve 2 20/35

Subtract 7/18 from 90/35

1^st number: 2 20/35, 2^nd number: 7/18

90/35 - 7/18 is 275/126.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 18 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 35 × 18 = 630,
90/35 = 90 × 18/35 × 18 = 1620/630
Likewise, for the 2nd fraction, since 18 × 35 = 630,
7/18 = 7 × 35/18 × 35 = 245/630
Subtract the two like fractions:
1620/630 - 245/630 = 1620 - 245/630 = 1375/630
After reducing the fraction, the answer is 275/126
In mixed form: 223/126

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