Add 72/7 and 42/40
1st number: 10 2/7, 2nd number: 1 2/40
72/7 + 42/40 is 1587/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
72/7 = 72 × 40/7 × 40 = 2880/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
42/40 = 42 × 7/40 × 7 = 294/280 - Add the two like fractions:
2880/280 + 294/280 = 2880 + 294/280 = 3174/280 - 3174/280 simplified gives 1587/140
- So, 72/7 + 42/40 = 1587/140
In mixed form: 1147/140
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