Add 45/21 and 4/40, Solve 2 3/21 + 4/40 as a fraction

Add 45/21 and 4/40

1^st number: 2 3/21, 2^nd number: 4/40

45/21 + 4/40 is 157/70.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 21 × 40 = 840,
45/21 = 45 × 40/21 × 40 = 1800/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
4/40 = 4 × 21/40 × 21 = 84/840
Add the two like fractions:
1800/840 + 84/840 = 1800 + 84/840 = 1884/840
1884/840 simplified gives 157/70
So, 45/21 + 4/40 = 157/70
In mixed form: 217/70

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