Add 70/42 and 90/54
1st number: 1 28/42, 2nd number: 1 36/54
70/42 + 90/54 is 10/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
70/42 = 70 × 9/42 × 9 = 630/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
90/54 = 90 × 7/54 × 7 = 630/378 - Add the two like fractions:
630/378 + 630/378 = 630 + 630/378 = 1260/378 - 1260/378 simplified gives 10/3
- So, 70/42 + 90/54 = 10/3
In mixed form: 31/3
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