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

Subtract 2/90 from 18/35

18/35 - 2/90 is 31/63.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 35 × 18 = 630,
18/35 = 18 × 18/35 × 18 = 324/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
2/90 = 2 × 7/90 × 7 = 14/630
Subtract the two like fractions:
324/630 - 14/630 = 324 - 14/630 = 310/630
After reducing the fraction, the answer is 31/63

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