-4x + y = 9
- 4x +9y= 17
Solve by elimination
1 answer:
Answer:
(x , y) = (-2 , 1)
Step-by-step explanation:
multiply both sides by -1
sum the equations vertically to eliminate at least one variable
divide both sides by -8
substitute the value of y into the equation
now solve for x using that y=1
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