Add 72/4 and 70/90
1st number: 18 0/4, 2nd number: 70/90
72/4 + 70/90 is 169/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
72/4 = 72 × 45/4 × 45 = 3240/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
70/90 = 70 × 2/90 × 2 = 140/180 - Add the two like fractions:
3240/180 + 140/180 = 3240 + 140/180 = 3380/180 - 3380/180 simplified gives 169/9
- So, 72/4 + 70/90 = 169/9
In mixed form: 187/9
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