Add 54/72 and 84/70, Solve 54/72 + 1 14/70 as a fraction

Add 54/72 and 84/70

1^st number: 54/72, 2^nd number: 1 14/70

54/72 + 84/70 is 39/20.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 70 is 2520

Next, find the equivalent fraction of both fractional numbers with denominator 2520
For the 1st fraction, since 72 × 35 = 2520,
54/72 = 54 × 35/72 × 35 = 1890/2520
Likewise, for the 2nd fraction, since 70 × 36 = 2520,
84/70 = 84 × 36/70 × 36 = 3024/2520
Add the two like fractions:
1890/2520 + 3024/2520 = 1890 + 3024/2520 = 4914/2520
4914/2520 simplified gives 39/20
So, 54/72 + 84/70 = 39/20
In mixed form: 119/20

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