Add 90/70 and 3/36, Solve 1 20/70 + 3/36 as a fraction

Add 90/70 and 3/36

1^st number: 1 20/70, 2^nd number: 3/36

90/70 + 3/36 is 115/84.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 36 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 70 × 18 = 1260,
90/70 = 90 × 18/70 × 18 = 1620/1260
Likewise, for the 2nd fraction, since 36 × 35 = 1260,
3/36 = 3 × 35/36 × 35 = 105/1260
Add the two like fractions:
1620/1260 + 105/1260 = 1620 + 105/1260 = 1725/1260
1725/1260 simplified gives 115/84
So, 90/70 + 3/36 = 115/84
In mixed form: 131/84

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