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Nutka1998 [239]
3 years ago
15

If x+y=12and x-y=8, what is the value of 2x-xy?

Mathematics
1 answer:
slamgirl [31]3 years ago
8 0

Answer:

2x - xy = 0

Step-by-step explanation:

We need to solve the equations simultaneously to find the values of x and y:

x + y = 12

x - y = 8 - we need to add the equations together

2x = 20

x = 10

Then we substitute x into one of the equations to find y:

10 + y = 12

12 - 10 = y

y = 2

Now we substitute x and y into the final expression:

2(10) - 2(10)

20 - 20 = 0

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