Subtract 54/7 from 35/90, Solve 35/90

Subtract 54/7 from 35/90

1^st number: 35/90, 2^nd number: 7 5/7

35/90 - 54/7 is -923/126.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
35/90 = 35 × 7/90 × 7 = 245/630
Likewise, for the 2nd fraction, since 7 × 90 = 630,
54/7 = 54 × 90/7 × 90 = 4860/630
Subtract the two like fractions:
245/630 - 4860/630 = 245 - 4860/630 = -4615/630
After reducing the fraction, the answer is -923/126

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