Add 21/45 and 1/7
21/45 + 1/7 is 64/105.
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,
1/7 = 1 × 45/7 × 45 = 45/315 - Add the two like fractions:
147/315 + 45/315 = 147 + 45/315 = 192/315 - 192/315 simplified gives 64/105
- So, 21/45 + 1/7 = 64/105
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