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5 votes
2x + y = -2

x + y = 5
 The x-coordinate of the solution to the system shown is _____.
 -7
-3
3
7

2 Answers

6 votes

Answer:

-7

Explanation:

User Rharter
by
8.4k points
5 votes
Subtract equation (2) from equation (1)
Subtract the like terms (ie subtract straight down)

2x - x = 1x = x
y - y = 0y = 0 so the y terms go away
-2 - 5 = -7

We end up with x = -7
User Cameron McGrane
by
8.6k points

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