Add 40/70 and 84/63
1st number: 40/70, 2nd number: 1 21/63
40/70 + 84/63 is 40/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
40/70 = 40 × 9/70 × 9 = 360/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
84/63 = 84 × 10/63 × 10 = 840/630 - Add the two like fractions:
360/630 + 840/630 = 360 + 840/630 = 1200/630 - 1200/630 simplified gives 40/21
- So, 40/70 + 84/63 = 40/21
In mixed form: 119/21
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