Add 45/70 and 63/90
45/70 + 63/90 is 47/35.
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,
45/70 = 45 × 9/70 × 9 = 405/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
63/90 = 63 × 7/90 × 7 = 441/630 - Add the two like fractions:
405/630 + 441/630 = 405 + 441/630 = 846/630 - 846/630 simplified gives 47/35
- So, 45/70 + 63/90 = 47/35
In mixed form: 112/35
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Related: 90/70+63/90