Add 18/28 and 54/70
18/28 + 54/70 is 99/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
18/28 = 18 × 5/28 × 5 = 90/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
54/70 = 54 × 2/70 × 2 = 108/140 - Add the two like fractions:
90/140 + 108/140 = 90 + 108/140 = 198/140 - 198/140 simplified gives 99/70
- So, 18/28 + 54/70 = 99/70
In mixed form: 129/70
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