Add 90/15 and 70/63
1st number: 6 0/15, 2nd number: 1 7/63
90/15 + 70/63 is 64/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
90/15 = 90 × 21/15 × 21 = 1890/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
70/63 = 70 × 5/63 × 5 = 350/315 - Add the two like fractions:
1890/315 + 350/315 = 1890 + 350/315 = 2240/315 - 2240/315 simplified gives 64/9
- So, 90/15 + 70/63 = 64/9
In mixed form: 71/9
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