Add 81/21 and 70/48, Solve 3 18/21 + 1 22/48 as a fraction

Add 81/21 and 70/48

1^st number: 3 18/21, 2^nd number: 1 22/48

81/21 + 70/48 is 893/168.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 21 × 16 = 336,
81/21 = 81 × 16/21 × 16 = 1296/336
Likewise, for the 2nd fraction, since 48 × 7 = 336,
70/48 = 70 × 7/48 × 7 = 490/336
Add the two like fractions:
1296/336 + 490/336 = 1296 + 490/336 = 1786/336
1786/336 simplified gives 893/168
So, 81/21 + 70/48 = 893/168
In mixed form: 553/168

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