Add 70/63 and 21/45
1st number: 1 7/63, 2nd number: 21/45
70/63 + 21/45 is 71/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
70/63 = 70 × 5/63 × 5 = 350/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
21/45 = 21 × 7/45 × 7 = 147/315 - Add the two like fractions:
350/315 + 147/315 = 350 + 147/315 = 497/315 - 497/315 simplified gives 71/45
- So, 70/63 + 21/45 = 71/45
In mixed form: 126/45
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