Add 18/7 and 90/40
1st number: 2 4/7, 2nd number: 2 10/40
18/7 + 90/40 is 135/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
18/7 = 18 × 40/7 × 40 = 720/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
90/40 = 90 × 7/40 × 7 = 630/280 - Add the two like fractions:
720/280 + 630/280 = 720 + 630/280 = 1350/280 - 1350/280 simplified gives 135/28
- So, 18/7 + 90/40 = 135/28
In mixed form: 423/28
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