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OpenStudy (anonymous):
Solve the system using substitution. What is the x- or y-coordinate of the solution? -2x - y = 3 3x + y = 2 A. x = 5 B. x = 7 C. x = 13/2 D. x = 15/2
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ganeshie8 (ganeshie8):
Add both the equations vertically : ``` -2x - y = 3 3x + y = 2 --------------- ```
OpenStudy (anonymous):
A?
ganeshie8 (ganeshie8):
Yes! may i knw how you got A ?
OpenStudy (anonymous):
because 3 + 2 = 5
ganeshie8 (ganeshie8):
Excellent!
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