Add 42/70 and 84/18
1st number: 42/70, 2nd number: 4 12/18
42/70 + 84/18 is 79/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
42/70 = 42 × 9/70 × 9 = 378/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
84/18 = 84 × 35/18 × 35 = 2940/630 - Add the two like fractions:
378/630 + 2940/630 = 378 + 2940/630 = 3318/630 - 3318/630 simplified gives 79/15
- So, 42/70 + 84/18 = 79/15
In mixed form: 54/15
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