Add 30/90 and 90/7
1st number: 30/90, 2nd number: 12 6/7
30/90 + 90/7 is 277/21.
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,
30/90 = 30 × 7/90 × 7 = 210/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
90/7 = 90 × 90/7 × 90 = 8100/630 - Add the two like fractions:
210/630 + 8100/630 = 210 + 8100/630 = 8310/630 - 8310/630 simplified gives 277/21
- So, 30/90 + 90/7 = 277/21
In mixed form: 134/21
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