Add 90/70 and 9/90
1st number: 1 20/70, 2nd number: 9/90
90/70 + 9/90 is 97/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 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 90 × 7 = 630,
9/90 = 9 × 7/90 × 7 = 63/630 - Add the two like fractions:
810/630 + 63/630 = 810 + 63/630 = 873/630 - 873/630 simplified gives 97/70
- So, 90/70 + 9/90 = 97/70
In mixed form: 127/70
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