Add 72/64 and 42/40
1st number: 1 8/64, 2nd number: 1 2/40
72/64 + 42/40 is 87/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 40 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 64 × 5 = 320,
72/64 = 72 × 5/64 × 5 = 360/320 - Likewise, for the 2nd fraction, since 40 × 8 = 320,
42/40 = 42 × 8/40 × 8 = 336/320 - Add the two like fractions:
360/320 + 336/320 = 360 + 336/320 = 696/320 - 696/320 simplified gives 87/40
- So, 72/64 + 42/40 = 87/40
In mixed form: 27/40
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