Add 42/70 and 60/40
1st number: 42/70, 2nd number: 1 20/40
42/70 + 60/40 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
42/70 = 42 × 4/70 × 4 = 168/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
60/40 = 60 × 7/40 × 7 = 420/280 - Add the two like fractions:
168/280 + 420/280 = 168 + 420/280 = 588/280 - 588/280 simplified gives 21/10
- So, 42/70 + 60/40 = 21/10
In mixed form: 21/10
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