Add 30/4 and 20/90
1st number: 7 2/4, 2nd number: 20/90
30/4 + 20/90 is 139/18.
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,
30/4 = 30 × 45/4 × 45 = 1350/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
20/90 = 20 × 2/90 × 2 = 40/180 - Add the two like fractions:
1350/180 + 40/180 = 1350 + 40/180 = 1390/180 - 1390/180 simplified gives 139/18
- So, 30/4 + 20/90 = 139/18
In mixed form: 713/18
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