Add 80/72 and 45/42
1st number: 1 8/72, 2nd number: 1 3/42
80/72 + 45/42 is 275/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 42 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
80/72 = 80 × 7/72 × 7 = 560/504 - Likewise, for the 2nd fraction, since 42 × 12 = 504,
45/42 = 45 × 12/42 × 12 = 540/504 - Add the two like fractions:
560/504 + 540/504 = 560 + 540/504 = 1100/504 - 1100/504 simplified gives 275/126
- So, 80/72 + 45/42 = 275/126
In mixed form: 223/126
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