Add 45/70 and 60/72
45/70 + 60/72 is 31/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 70 × 36 = 2520,
45/70 = 45 × 36/70 × 36 = 1620/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
60/72 = 60 × 35/72 × 35 = 2100/2520 - Add the two like fractions:
1620/2520 + 2100/2520 = 1620 + 2100/2520 = 3720/2520 - 3720/2520 simplified gives 31/21
- So, 45/70 + 60/72 = 31/21
In mixed form: 110/21
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