Add 90/7 and 12/80
1st number: 12 6/7, 2nd number: 12/80
90/7 + 12/80 is 1821/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
90/7 = 90 × 80/7 × 80 = 7200/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
12/80 = 12 × 7/80 × 7 = 84/560 - Add the two like fractions:
7200/560 + 84/560 = 7200 + 84/560 = 7284/560 - 7284/560 simplified gives 1821/140
- So, 90/7 + 12/80 = 1821/140
In mixed form: 131/140
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