Add 70/90 and 21/8
1st number: 70/90, 2nd number: 2 5/8
70/90 + 21/8 is 245/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
70/90 = 70 × 4/90 × 4 = 280/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
21/8 = 21 × 45/8 × 45 = 945/360 - Add the two like fractions:
280/360 + 945/360 = 280 + 945/360 = 1225/360 - 1225/360 simplified gives 245/72
- So, 70/90 + 21/8 = 245/72
In mixed form: 329/72
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