Q. Solve the system of equations.−9x+4y=69x+5y=−33x=□y=□
Identify variable to eliminate: Identify the variable to eliminate. In this case, we can eliminate 'x' as the coefficients are the same in both equations but with opposite signs.
Identify operation to eliminate variable: Identify the operation to eliminate the variable. Here, we add the equations as the coefficients are opposite.
Add equations to eliminate x: Add the equations to eliminate 'x'. (−9x+4y)+(9x+5y)=6+(−33)−9x+4y+9x+5y=−274y+5y=−279y=−27
Solve for y: Solve for 'y'. Dividing both sides of the equation by 9 gives us y=−927.y=−3
Substitute y into first equation: Substitute y=−3 into the first equation to solve for 'x'. Substitute y=−3 in −9x+4y=6. We get −9x+4(−3)=6. Simplify to get −9x−12=6. Add 12 to both sides, we get −9x=18.
Solve for x: Solve for 'x'. Dividing both sides of the equation by −9 gives us x=−918.x=−2
Write the solution as a coordinate point: Write the solution as a coordinate point. The solution is (−2,−3).
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