Add 70/25 and 90/72
1st number: 2 20/25, 2nd number: 1 18/72
70/25 + 90/72 is 81/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 25 × 72 = 1800,
70/25 = 70 × 72/25 × 72 = 5040/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
90/72 = 90 × 25/72 × 25 = 2250/1800 - Add the two like fractions:
5040/1800 + 2250/1800 = 5040 + 2250/1800 = 7290/1800 - 7290/1800 simplified gives 81/20
- So, 70/25 + 90/72 = 81/20
In mixed form: 41/20
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