Add 28/42 and 90/60, Solve 28/42 + 1 30/60 as a fraction

Add 28/42 and 90/60

1^st number: 28/42, 2^nd number: 1 30/60

28/42 + 90/60 is 13/6.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 60 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 42 × 10 = 420,
28/42 = 28 × 10/42 × 10 = 280/420
Likewise, for the 2nd fraction, since 60 × 7 = 420,
90/60 = 90 × 7/60 × 7 = 630/420
Add the two like fractions:
280/420 + 630/420 = 280 + 630/420 = 910/420
910/420 simplified gives 13/6
So, 28/42 + 90/60 = 13/6
In mixed form: 21/6

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