Add 18/4 and 90/70
1st number: 4 2/4, 2nd number: 1 20/70
18/4 + 90/70 is 81/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
18/4 = 18 × 35/4 × 35 = 630/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
90/70 = 90 × 2/70 × 2 = 180/140 - Add the two like fractions:
630/140 + 180/140 = 630 + 180/140 = 810/140 - 810/140 simplified gives 81/14
- So, 18/4 + 90/70 = 81/14
In mixed form: 511/14
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