Add 18/70 and 90/40
1st number: 18/70, 2nd number: 2 10/40
18/70 + 90/40 is 351/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
18/70 = 18 × 4/70 × 4 = 72/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
90/40 = 90 × 7/40 × 7 = 630/280 - Add the two like fractions:
72/280 + 630/280 = 72 + 630/280 = 702/280 - 702/280 simplified gives 351/140
- So, 18/70 + 90/40 = 351/140
In mixed form: 271/140
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