Add 70/6 and 90/7, Solve 11 4/6 + 12 6/7 as a fraction

Add 70/6 and 90/7

1^st number: 11 4/6, 2^nd number: 12 6/7

70/6 + 90/7 is 515/21.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 7 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 6 × 7 = 42,
70/6 = 70 × 7/6 × 7 = 490/42
Likewise, for the 2nd fraction, since 7 × 6 = 42,
90/7 = 90 × 6/7 × 6 = 540/42
Add the two like fractions:
490/42 + 540/42 = 490 + 540/42 = 1030/42
1030/42 simplified gives 515/21
So, 70/6 + 90/7 = 515/21
In mixed form: 2411/21

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