Add 42/72 and 63/70
42/72 + 63/70 is 89/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 70 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
42/72 = 42 × 35/72 × 35 = 1470/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
63/70 = 63 × 36/70 × 36 = 2268/2520 - Add the two like fractions:
1470/2520 + 2268/2520 = 1470 + 2268/2520 = 3738/2520 - 3738/2520 simplified gives 89/60
- So, 42/72 + 63/70 = 89/60
In mixed form: 129/60
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