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erastovalidia [21]
3 years ago
12

The sum of two numbers is 70. one number is 8 more than the other. what's the smaller number?

Mathematics
1 answer:
bija089 [108]3 years ago
4 0
X=8+y
x+y=70

Rewrite the first equation to x-y=8
Copy the second equation   x+y=70

Add the two equations and you get 2x=78
Therefore, x=39. Since this is the bigger number the smaller number(y) would have to be 31 because you subtract 8 from x which is 39. 39 is your answer. 
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