Add 40/90 and 80/63
1st number: 40/90, 2nd number: 1 17/63
40/90 + 80/63 is 12/7.
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,
40/90 = 40 × 7/90 × 7 = 280/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
80/63 = 80 × 10/63 × 10 = 800/630 - Add the two like fractions:
280/630 + 800/630 = 280 + 800/630 = 1080/630 - 1080/630 simplified gives 12/7
- So, 40/90 + 80/63 = 12/7
In mixed form: 15/7
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Related: 80/90+80/63