Add 40/42 and 90/72
1st number: 40/42, 2nd number: 1 18/72
40/42 + 90/72 is 185/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 42 × 12 = 504,
40/42 = 40 × 12/42 × 12 = 480/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504 - Add the two like fractions:
480/504 + 630/504 = 480 + 630/504 = 1110/504 - 1110/504 simplified gives 185/84
- So, 40/42 + 90/72 = 185/84
In mixed form: 217/84
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