Add 40/10 and 21/42, Solve 4 0/10 + 21/42 as a fraction

Add 40/10 and 21/42

1^st number: 4 0/10, 2^nd number: 21/42

40/10 + 21/42 is 9/2.

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,
40/10 = 40 × 21/10 × 21 = 840/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
21/42 = 21 × 5/42 × 5 = 105/210
Add the two like fractions:
840/210 + 105/210 = 840 + 105/210 = 945/210
945/210 simplified gives 9/2
So, 40/10 + 21/42 = 9/2
In mixed form: 41/2

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