Add 70/40 and 63/18
1st number: 1 30/40, 2nd number: 3 9/18
70/40 + 63/18 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
70/40 = 70 × 9/40 × 9 = 630/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
63/18 = 63 × 20/18 × 20 = 1260/360 - Add the two like fractions:
630/360 + 1260/360 = 630 + 1260/360 = 1890/360 - 1890/360 simplified gives 21/4
- So, 70/40 + 63/18 = 21/4
In mixed form: 51/4
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