Add 15/30 and 45/70
15/30 + 45/70 is 8/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
15/30 = 15 × 7/30 × 7 = 105/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
45/70 = 45 × 3/70 × 3 = 135/210 - Add the two like fractions:
105/210 + 135/210 = 105 + 135/210 = 240/210 - 240/210 simplified gives 8/7
- So, 15/30 + 45/70 = 8/7
In mixed form: 11/7
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