Add 8/45 and 21/70
8/45 + 21/70 is 43/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
8/45 = 8 × 14/45 × 14 = 112/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
21/70 = 21 × 9/70 × 9 = 189/630 - Add the two like fractions:
112/630 + 189/630 = 112 + 189/630 = 301/630 - 301/630 simplified gives 43/90
- So, 8/45 + 21/70 = 43/90
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