Add 42/18 and 40/28
1st number: 2 6/18, 2nd number: 1 12/28
42/18 + 40/28 is 79/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
42/18 = 42 × 14/18 × 14 = 588/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
40/28 = 40 × 9/28 × 9 = 360/252 - Add the two like fractions:
588/252 + 360/252 = 588 + 360/252 = 948/252 - 948/252 simplified gives 79/21
- So, 42/18 + 40/28 = 79/21
In mixed form: 316/21
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