Add 84/21 and 98/18, Solve 4 0/21 + 5 8/18 as a fraction

Add 84/21 and 98/18

1^st number: 4 0/21, 2^nd number: 5 8/18

84/21 + 98/18 is 85/9.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
84/21 = 84 × 6/21 × 6 = 504/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
98/18 = 98 × 7/18 × 7 = 686/126
Add the two like fractions:
504/126 + 686/126 = 504 + 686/126 = 1190/126
1190/126 simplified gives 85/9
So, 84/21 + 98/18 = 85/9
In mixed form: 94/9

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