Add 21/45 and 70/7
1st number: 21/45, 2nd number: 10 0/7
21/45 + 70/7 is 157/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
21/45 = 21 × 7/45 × 7 = 147/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
70/7 = 70 × 45/7 × 45 = 3150/315 - Add the two like fractions:
147/315 + 3150/315 = 147 + 3150/315 = 3297/315 - 3297/315 simplified gives 157/15
- So, 21/45 + 70/7 = 157/15
In mixed form: 107/15
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