Add 90/5 and 10/21, Solve 18 0/5 + 10/21 as a fraction

Add 90/5 and 10/21

1^st number: 18 0/5, 2^nd number: 10/21

90/5 + 10/21 is 388/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 5 × 21 = 105,
90/5 = 90 × 21/5 × 21 = 1890/105
Likewise, for the 2nd fraction, since 21 × 5 = 105,
10/21 = 10 × 5/21 × 5 = 50/105
Add the two like fractions:
1890/105 + 50/105 = 1890 + 50/105 = 1940/105
1940/105 simplified gives 388/21
So, 90/5 + 10/21 = 388/21
In mixed form: 1810/21

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