Question

The sum of two numbers is equal to 63 and their difference is equal to 12. Find the numbers.

Answer 1

25.5 and 37.5

Explanation:

37.5-12=25.5

25.5+37.5=63

Answer 2

a + b = 63

a - b = 12

So, a - b = 12 which can also be written as a = b + 12

Then use substitution and plug in (b + 12) for a in the first equation

(b+12) + b =63

-12 -12

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2b = 51 so b=25.5

Now, you know b which can be used to find a

63- 25.5= 37.5

So, a = 37.5 and b = 25.5