Add 70/42 and 30/90
1st number: 1 28/42, 2nd number: 30/90
70/42 + 30/90 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
70/42 = 70 × 15/42 × 15 = 1050/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
30/90 = 30 × 7/90 × 7 = 210/630 - Add the two like fractions:
1050/630 + 210/630 = 1050 + 210/630 = 1260/630 - 1260/630 simplified gives 2/1
- So, 70/42 + 30/90 = 2/1
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