Add 12/90 and 1/70
12/90 + 1/70 is 31/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
12/90 = 12 × 7/90 × 7 = 84/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
1/70 = 1 × 9/70 × 9 = 9/630 - Add the two like fractions:
84/630 + 9/630 = 84 + 9/630 = 93/630 - 93/630 simplified gives 31/210
- So, 12/90 + 1/70 = 31/210
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