Add 30/42 and 72/90
30/42 + 72/90 is 53/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
30/42 = 30 × 15/42 × 15 = 450/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
72/90 = 72 × 7/90 × 7 = 504/630 - Add the two like fractions:
450/630 + 504/630 = 450 + 504/630 = 954/630 - 954/630 simplified gives 53/35
- So, 30/42 + 72/90 = 53/35
In mixed form: 118/35
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