Add 18/90 and 28/7
1st number: 18/90, 2nd number: 4 0/7
18/90 + 28/7 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
18/90 = 18 × 7/90 × 7 = 126/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
28/7 = 28 × 90/7 × 90 = 2520/630 - Add the two like fractions:
126/630 + 2520/630 = 126 + 2520/630 = 2646/630 - 2646/630 simplified gives 21/5
- So, 18/90 + 28/7 = 21/5
In mixed form: 41/5
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