Question

Systems of equations

y=2x+3
y=-x-9
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Answer 1

First step - rewrite the equation to single out the variables.

Explanation:

Write the equation again as 2x+3=-x-9

Solve for x and get x = -4

Then, substitute x into the old equation as y = 2(-4)+3 and solve for y.

Solve for y and get y = -5

x = -4 y= -5

Answer 2

The solution is (-4,-5)

Explanation: