Add 90/21 and 70/5, Solve 4 6/21 + 14 0/5 as a fraction

Add 90/21 and 70/5

1^st number: 4 6/21, 2^nd number: 14 0/5

90/21 + 70/5 is 128/7.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 21 × 5 = 105,
90/21 = 90 × 5/21 × 5 = 450/105
Likewise, for the 2nd fraction, since 5 × 21 = 105,
70/5 = 70 × 21/5 × 21 = 1470/105
Add the two like fractions:
450/105 + 1470/105 = 450 + 1470/105 = 1920/105
1920/105 simplified gives 128/7
So, 90/21 + 70/5 = 128/7
In mixed form: 182/7

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