Add 12/21 and 4/72
12/21 + 4/72 is 79/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
12/21 = 12 × 24/21 × 24 = 288/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
4/72 = 4 × 7/72 × 7 = 28/504 - Add the two like fractions:
288/504 + 28/504 = 288 + 28/504 = 316/504 - 316/504 simplified gives 79/126
- So, 12/21 + 4/72 = 79/126
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