Add 42/70 and 54/12, Solve 42/70 + 4 6/12 as a fraction

Add 42/70 and 54/12

1^st number: 42/70, 2^nd number: 4 6/12

42/70 + 54/12 is 51/10.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 70 × 6 = 420,
42/70 = 42 × 6/70 × 6 = 252/420
Likewise, for the 2nd fraction, since 12 × 35 = 420,
54/12 = 54 × 35/12 × 35 = 1890/420
Add the two like fractions:
252/420 + 1890/420 = 252 + 1890/420 = 2142/420
2142/420 simplified gives 51/10
So, 42/70 + 54/12 = 51/10
In mixed form: 51/10

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