Add 42/40 and 90/7
1st number: 1 2/40, 2nd number: 12 6/7
42/40 + 90/7 is 1947/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
42/40 = 42 × 7/40 × 7 = 294/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
90/7 = 90 × 40/7 × 40 = 3600/280 - Add the two like fractions:
294/280 + 3600/280 = 294 + 3600/280 = 3894/280 - 3894/280 simplified gives 1947/140
- So, 42/40 + 90/7 = 1947/140
In mixed form: 13127/140
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