Add 63/70 and 40/90
63/70 + 40/90 is 121/90.
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,
63/70 = 63 × 9/70 × 9 = 567/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
40/90 = 40 × 7/90 × 7 = 280/630 - Add the two like fractions:
567/630 + 280/630 = 567 + 280/630 = 847/630 - 847/630 simplified gives 121/90
- So, 63/70 + 40/90 = 121/90
In mixed form: 131/90
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