Solutions by everydaycalculation.com

47 - 58 is -356.

- Find the least common denominator or LCM of the two denominators:

LCM of 7 and 8 is**56**

Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,

47 = 4 × 87 × 8 = 3256 - Likewise, for the 2nd fraction, since 8 × 7 = 56,

58 = 5 × 78 × 7 = 3556 - Subtract the two like fractions:

3256 - 3556 = 32 - 3556 = -356

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