Add 40/42 and 21/5, Solve 40/42 + 4 1/5 as a fraction

Add 40/42 and 21/5

1^st number: 40/42, 2^nd number: 4 1/5

40/42 + 21/5 is 541/105.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
40/42 = 40 × 5/42 × 5 = 200/210
Likewise, for the 2nd fraction, since 5 × 42 = 210,
21/5 = 21 × 42/5 × 42 = 882/210
Add the two like fractions:
200/210 + 882/210 = 200 + 882/210 = 1082/210
1082/210 simplified gives 541/105
So, 40/42 + 21/5 = 541/105
In mixed form: 516/105

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