Add 56/70 and 42/90
56/70 + 42/90 is 19/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
56/70 = 56 × 9/70 × 9 = 504/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
42/90 = 42 × 7/90 × 7 = 294/630 - Add the two like fractions:
504/630 + 294/630 = 504 + 294/630 = 798/630 - 798/630 simplified gives 19/15
- So, 56/70 + 42/90 = 19/15
In mixed form: 14/15
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