Add 28/70 and 90/12, Solve 28/70 + 7 6/12 as a fraction

Add 28/70 and 90/12

1^st number: 28/70, 2^nd number: 7 6/12

28/70 + 90/12 is 79/10.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 70 × 6 = 420,
28/70 = 28 × 6/70 × 6 = 168/420
Likewise, for the 2nd fraction, since 12 × 35 = 420,
90/12 = 90 × 35/12 × 35 = 3150/420
Add the two like fractions:
168/420 + 3150/420 = 168 + 3150/420 = 3318/420
3318/420 simplified gives 79/10
So, 28/70 + 90/12 = 79/10
In mixed form: 79/10

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