Add 70/20 and 50/45
1st number: 3 10/20, 2nd number: 1 5/45
70/20 + 50/45 is 83/18.
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,
50/45 = 50 × 4/45 × 4 = 200/180 - Add the two like fractions:
630/180 + 200/180 = 630 + 200/180 = 830/180 - 830/180 simplified gives 83/18
- So, 70/20 + 50/45 = 83/18
In mixed form: 411/18
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