Add 45/70 and 20/30
45/70 + 20/30 is 55/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
45/70 = 45 × 3/70 × 3 = 135/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
20/30 = 20 × 7/30 × 7 = 140/210 - Add the two like fractions:
135/210 + 140/210 = 135 + 140/210 = 275/210 - 275/210 simplified gives 55/42
- So, 45/70 + 20/30 = 55/42
In mixed form: 113/42
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