Subtract 18/70 from 30/36, Solve 30/36

Subtract 18/70 from 30/36

30/36 - 18/70 is 121/210.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 36 × 35 = 1260,
30/36 = 30 × 35/36 × 35 = 1050/1260
Likewise, for the 2nd fraction, since 70 × 18 = 1260,
18/70 = 18 × 18/70 × 18 = 324/1260
Subtract the two like fractions:
1050/1260 - 324/1260 = 1050 - 324/1260 = 726/1260
After reducing the fraction, the answer is 121/210

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