Add 70/90 and 42/63
70/90 + 42/63 is 13/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
70/90 = 70 × 7/90 × 7 = 490/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
42/63 = 42 × 10/63 × 10 = 420/630 - Add the two like fractions:
490/630 + 420/630 = 490 + 420/630 = 910/630 - 910/630 simplified gives 13/9
- So, 70/90 + 42/63 = 13/9
In mixed form: 14/9
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