Add 18/42 and 45/28, Solve 18/42 + 1 17/28 as a fraction

Add 18/42 and 45/28

1^st number: 18/42, 2^nd number: 1 17/28

18/42 + 45/28 is 57/28.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 42 × 2 = 84,
18/42 = 18 × 2/42 × 2 = 36/84
Likewise, for the 2nd fraction, since 28 × 3 = 84,
45/28 = 45 × 3/28 × 3 = 135/84
Add the two like fractions:
36/84 + 135/84 = 36 + 135/84 = 171/84
171/84 simplified gives 57/28
So, 18/42 + 45/28 = 57/28
In mixed form: 21/28

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