Add 42/72 and 30/7
1st number: 42/72, 2nd number: 4 2/7
42/72 + 30/7 is 409/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
42/72 = 42 × 7/72 × 7 = 294/504 - Likewise, for the 2nd fraction, since 7 × 72 = 504,
30/7 = 30 × 72/7 × 72 = 2160/504 - Add the two like fractions:
294/504 + 2160/504 = 294 + 2160/504 = 2454/504 - 2454/504 simplified gives 409/84
- So, 42/72 + 30/7 = 409/84
In mixed form: 473/84
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