Add 70/42 and 40/90
1st number: 1 28/42, 2nd number: 40/90
70/42 + 40/90 is 19/9.
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,
40/90 = 40 × 7/90 × 7 = 280/630 - Add the two like fractions:
1050/630 + 280/630 = 1050 + 280/630 = 1330/630 - 1330/630 simplified gives 19/9
- So, 70/42 + 40/90 = 19/9
In mixed form: 21/9
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