Add 40/60 and 63/42, Solve 40/60 + 1 21/42 as a fraction

Add 40/60 and 63/42

1^st number: 40/60, 2^nd number: 1 21/42

40/60 + 63/42 is 13/6.

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

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 60 × 7 = 420,
40/60 = 40 × 7/60 × 7 = 280/420
Likewise, for the 2nd fraction, since 42 × 10 = 420,
63/42 = 63 × 10/42 × 10 = 630/420
Add the two like fractions:
280/420 + 630/420 = 280 + 630/420 = 910/420
910/420 simplified gives 13/6
So, 40/60 + 63/42 = 13/6
In mixed form: 21/6

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