Subtract 45/8 from 10/90, Solve 10/90

Subtract 45/8 from 10/90

1^st number: 10/90, 2^nd number: 5 5/8

10/90 - 45/8 is -397/72.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 90 × 4 = 360,
10/90 = 10 × 4/90 × 4 = 40/360
Likewise, for the 2nd fraction, since 8 × 45 = 360,
45/8 = 45 × 45/8 × 45 = 2025/360
Subtract the two like fractions:
40/360 - 2025/360 = 40 - 2025/360 = -1985/360
After reducing the fraction, the answer is -397/72

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