System. Solve the system -2x-y=-9 5x-2y=18

Expert Answers

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We have to solve

-2x - y = -9 ...(1)

5x - 2y = 18 ...(2)

2*(1) - (2)

=> -4x - 2y - 5x + 2y = -18 - 18

=> -9x = -36

=> x = 4

substitute in (1)

-2x - y = -9

=> y = -2*4 + 9

=> y = 1

The solution of the system of equations is (4, 1)

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