Add 90/70 and 98/60, Solve 1 20/70 + 1 38/60 as a fraction

Add 90/70 and 98/60

1^st number: 1 20/70, 2^nd number: 1 38/60

90/70 + 98/60 is 613/210.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 60 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 70 × 6 = 420,
90/70 = 90 × 6/70 × 6 = 540/420
Likewise, for the 2nd fraction, since 60 × 7 = 420,
98/60 = 98 × 7/60 × 7 = 686/420
Add the two like fractions:
540/420 + 686/420 = 540 + 686/420 = 1226/420
1226/420 simplified gives 613/210
So, 90/70 + 98/60 = 613/210
In mixed form: 2193/210

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