Add 45/70 and 9/21
45/70 + 9/21 is 15/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 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 21 × 10 = 210,
9/21 = 9 × 10/21 × 10 = 90/210 - Add the two like fractions:
135/210 + 90/210 = 135 + 90/210 = 225/210 - 225/210 simplified gives 15/14
- So, 45/70 + 9/21 = 15/14
In mixed form: 11/14
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