Add 40/45 and 42/12, Solve 40/45 + 3 6/12 as a fraction

Add 40/45 and 42/12

1^st number: 40/45, 2^nd number: 3 6/12

40/45 + 42/12 is 79/18.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180

Next, find the equivalent fraction of both fractional numbers with denominator 180
For the 1st fraction, since 45 × 4 = 180,
40/45 = 40 × 4/45 × 4 = 160/180
Likewise, for the 2nd fraction, since 12 × 15 = 180,
42/12 = 42 × 15/12 × 15 = 630/180
Add the two like fractions:
160/180 + 630/180 = 160 + 630/180 = 790/180
790/180 simplified gives 79/18
So, 40/45 + 42/12 = 79/18
In mixed form: 47/18

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