Add 12/90 and 4/70
12/90 + 4/70 is 4/21.
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,
4/70 = 4 × 9/70 × 9 = 36/630 - Add the two like fractions:
84/630 + 36/630 = 84 + 36/630 = 120/630 - 120/630 simplified gives 4/21
- So, 12/90 + 4/70 = 4/21
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