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5 votes
2x + y = -2

x + y = 5

The x-coordinate of the solution to the system shown is _____.

User Ed DeGagne
by
8.0k points

1 Answer

3 votes
The x-coordinate of the solution to the system shown is -7.

Proof:
From the 2nd equation, equate in terms of y:
y = 5 - x
Then substitute it to the first equation:
2x + 5 - x = -2
2x - x = -2 -5
x = -7
User Maackle
by
8.6k points

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