2x + y = -2
x + y = 5

Asked 9 months ago
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1
2x + y = -2
x + y = 5

1 Answer

2

Answer:

x= -7, y= 12

Step-by-step explanation:

To find the value of x and y, first label the 2 equations.

2x +y= -2 -----(1)

x +y= 5 -----(2)

(1) -(2):

2x +y -(x +y)= -2 -5

2x +y -x -y= -7 (expand bracket)

x= -7

subst. x= -7 into (2):

-7 +y= 5

y= 5 +7 (+7 on both sides)

y= 12

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Shanie Beahan
15.5k 3 10 26
answered 9 months ago