Add 15/90 and 12/7
1st number: 15/90, 2nd number: 1 5/7
15/90 + 12/7 is 79/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 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 7 × 90 = 630,
12/7 = 12 × 90/7 × 90 = 1080/630 - Add the two like fractions:
105/630 + 1080/630 = 105 + 1080/630 = 1185/630 - 1185/630 simplified gives 79/42
- So, 15/90 + 12/7 = 79/42
In mixed form: 137/42
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