Add 15/90 and 36/42
15/90 + 36/42 is 43/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
15/90 = 15 × 7/90 × 7 = 105/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
36/42 = 36 × 15/42 × 15 = 540/630 - Add the two like fractions:
105/630 + 540/630 = 105 + 540/630 = 645/630 - 645/630 simplified gives 43/42
- So, 15/90 + 36/42 = 43/42
In mixed form: 11/42
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