Add 70/80 and 15/45
70/80 + 15/45 is 29/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
15/45 = 15 × 16/45 × 16 = 240/720 - Add the two like fractions:
630/720 + 240/720 = 630 + 240/720 = 870/720 - 870/720 simplified gives 29/24
- So, 70/80 + 15/45 = 29/24
In mixed form: 15/24
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