Add 12/15 and 70/90
12/15 + 70/90 is 71/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
12/15 = 12 × 6/15 × 6 = 72/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
70/90 = 70 × 1/90 × 1 = 70/90 - Add the two like fractions:
72/90 + 70/90 = 72 + 70/90 = 142/90 - 142/90 simplified gives 71/45
- So, 12/15 + 70/90 = 71/45
In mixed form: 126/45
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