Add 40/15 and 90/7
1st number: 2 10/15, 2nd number: 12 6/7
40/15 + 90/7 is 326/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
40/15 = 40 × 7/15 × 7 = 280/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
90/7 = 90 × 15/7 × 15 = 1350/105 - Add the two like fractions:
280/105 + 1350/105 = 280 + 1350/105 = 1630/105 - 1630/105 simplified gives 326/21
- So, 40/15 + 90/7 = 326/21
In mixed form: 1511/21
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