Add 75/18 and 70/40
1st number: 4 3/18, 2nd number: 1 30/40
75/18 + 70/40 is 71/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
75/18 = 75 × 20/18 × 20 = 1500/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
70/40 = 70 × 9/40 × 9 = 630/360 - Add the two like fractions:
1500/360 + 630/360 = 1500 + 630/360 = 2130/360 - 2130/360 simplified gives 71/12
- So, 75/18 + 70/40 = 71/12
In mixed form: 511/12
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