Add 8/7 and 21/45
1st number: 1 1/7, 2nd number: 21/45
8/7 + 21/45 is 169/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
8/7 = 8 × 45/7 × 45 = 360/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
21/45 = 21 × 7/45 × 7 = 147/315 - Add the two like fractions:
360/315 + 147/315 = 360 + 147/315 = 507/315 - 507/315 simplified gives 169/105
- So, 8/7 + 21/45 = 169/105
In mixed form: 164/105
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