Add 70/20 and 18/45
1st number: 3 10/20, 2nd number: 18/45
70/20 + 18/45 is 39/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
70/20 = 70 × 9/20 × 9 = 630/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
18/45 = 18 × 4/45 × 4 = 72/180 - Add the two like fractions:
630/180 + 72/180 = 630 + 72/180 = 702/180 - 702/180 simplified gives 39/10
- So, 70/20 + 18/45 = 39/10
In mixed form: 39/10
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