Add 21/70 and 90/4, Solve 21/70 + 22 2/4 as a fraction

Add 21/70 and 90/4

1^st number: 21/70, 2^nd number: 22 2/4

21/70 + 90/4 is 114/5.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 4 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 70 × 2 = 140,
21/70 = 21 × 2/70 × 2 = 42/140
Likewise, for the 2nd fraction, since 4 × 35 = 140,
90/4 = 90 × 35/4 × 35 = 3150/140
Add the two like fractions:
42/140 + 3150/140 = 42 + 3150/140 = 3192/140
3192/140 simplified gives 114/5
So, 21/70 + 90/4 = 114/5
In mixed form: 224/5

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