Add 90/40 and 21/70
1st number: 2 10/40, 2nd number: 21/70
90/40 + 21/70 is 51/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
90/40 = 90 × 7/40 × 7 = 630/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
21/70 = 21 × 4/70 × 4 = 84/280 - Add the two like fractions:
630/280 + 84/280 = 630 + 84/280 = 714/280 - 714/280 simplified gives 51/20
- So, 90/40 + 21/70 = 51/20
In mixed form: 211/20
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