Add 54/10 and 15/42, Solve 5 4/10 + 15/42 as a fraction

Add 54/10 and 15/42

1^st number: 5 4/10, 2^nd number: 15/42

54/10 + 15/42 is 403/70.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
54/10 = 54 × 21/10 × 21 = 1134/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
15/42 = 15 × 5/42 × 5 = 75/210
Add the two like fractions:
1134/210 + 75/210 = 1134 + 75/210 = 1209/210
1209/210 simplified gives 403/70
So, 54/10 + 15/42 = 403/70
In mixed form: 553/70

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