Add 45/70 and 90/84, Solve 45/70 + 1 6/84 as a fraction

Add 45/70 and 90/84

1^st number: 45/70, 2^nd number: 1 6/84

45/70 + 90/84 is 12/7.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 70 × 6 = 420,
45/70 = 45 × 6/70 × 6 = 270/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420
Add the two like fractions:
270/420 + 450/420 = 270 + 450/420 = 720/420
720/420 simplified gives 12/7
So, 45/70 + 90/84 = 12/7
In mixed form: 15/7

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