Add 90/70 and 28/18
1st number: 1 20/70, 2nd number: 1 10/18
90/70 + 28/18 is 179/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
90/70 = 90 × 9/70 × 9 = 810/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
28/18 = 28 × 35/18 × 35 = 980/630 - Add the two like fractions:
810/630 + 980/630 = 810 + 980/630 = 1790/630 - 1790/630 simplified gives 179/63
- So, 90/70 + 28/18 = 179/63
In mixed form: 253/63
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