Add 72/9 and 90/7
1st number: 8 0/9, 2nd number: 12 6/7
72/9 + 90/7 is 146/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
72/9 = 72 × 7/9 × 7 = 504/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
90/7 = 90 × 9/7 × 9 = 810/63 - Add the two like fractions:
504/63 + 810/63 = 504 + 810/63 = 1314/63 - 1314/63 simplified gives 146/7
- So, 72/9 + 90/7 = 146/7
In mixed form: 206/7
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