Question

Solve the system of equations. Show your work. (If you use Matrix, please note.)

3 x + y = -2

2 x - y = 7

Answer 1

(1, -5)

Explanation:

3x + y = -2

2x - y = 7

5x = 5 Divide both sides by 5

x = 1

Substitute 1 for x in either of the two equations given and solve for y.

3x + y = -2

3(1) + y = -2

3 + y = -2 Subtract 3 from both sides

3 - 3 + y = -2 -3

y = -5

(1,-5)

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