Add 90/54 and 81/70, Solve 1 36/54 + 1 11/70 as a fraction

Add 90/54 and 81/70

1^st number: 1 36/54, 2^nd number: 1 11/70

90/54 + 81/70 is 593/210.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 70 is 1890

Next, find the equivalent fraction of both fractional numbers with denominator 1890
For the 1st fraction, since 54 × 35 = 1890,
90/54 = 90 × 35/54 × 35 = 3150/1890
Likewise, for the 2nd fraction, since 70 × 27 = 1890,
81/70 = 81 × 27/70 × 27 = 2187/1890
Add the two like fractions:
3150/1890 + 2187/1890 = 3150 + 2187/1890 = 5337/1890
5337/1890 simplified gives 593/210
So, 90/54 + 81/70 = 593/210
In mixed form: 2173/210

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