Add 15/35 and 81/90
15/35 + 81/90 is 93/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
15/35 = 15 × 18/35 × 18 = 270/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
81/90 = 81 × 7/90 × 7 = 567/630 - Add the two like fractions:
270/630 + 567/630 = 270 + 567/630 = 837/630 - 837/630 simplified gives 93/70
- So, 15/35 + 81/90 = 93/70
In mixed form: 123/70
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