Add 90/70 and 90/9
1st number: 1 20/70, 2nd number: 10 0/9
90/70 + 90/9 is 79/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 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 9 × 70 = 630,
90/9 = 90 × 70/9 × 70 = 6300/630 - Add the two like fractions:
810/630 + 6300/630 = 810 + 6300/630 = 7110/630 - 7110/630 simplified gives 79/7
- So, 90/70 + 90/9 = 79/7
In mixed form: 112/7
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