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Gala2k [10]
3 years ago
12

The sum of two numbers is 43 and the difference is 19. what are the numbers?

Mathematics
1 answer:
Burka [1]3 years ago
3 0
You can solve this via algebra, lets say the numbers are x and y.
x + y = 43 and x - y = 19

You can re-arrange one of the equations to get

x = 43 - y Then substitute this into the other equation, so instead of x you put this:

(43 - y) - y = 19
43 - 2y = 19
-2y = 19 - 43
-2y = -24
-y = -12
so y = 12
then you can do 43 - 12 = 31 to get both of the numbers.
so the numbers are 31 and 12
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