Add 70/90 and 21/49
70/90 + 21/49 is 76/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 49 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
70/90 = 70 × 49/90 × 49 = 3430/4410 - Likewise, for the 2nd fraction, since 49 × 90 = 4410,
21/49 = 21 × 90/49 × 90 = 1890/4410 - Add the two like fractions:
3430/4410 + 1890/4410 = 3430 + 1890/4410 = 5320/4410 - 5320/4410 simplified gives 76/63
- So, 70/90 + 21/49 = 76/63
In mixed form: 113/63
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