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Solve the system of equations.

{:[-9x+4y=6],[9x+5y=-33],[x=◻],[y=◻]:}

Solve the system of equations.\newline9x+4y=69x+5y=33x=y= \begin{array}{l} -9 x+4 y=6 \\ 9 x+5 y=-33 \\ x=\square \\ y=\square \end{array}

Full solution

Q. Solve the system of equations.\newline9x+4y=69x+5y=33x=y= \begin{array}{l} -9 x+4 y=6 \\ 9 x+5 y=-33 \\ x=\square \\ y=\square \end{array}
  1. Identify variable to eliminate: Identify the variable to eliminate. In this case, we can eliminate 'xx' as the coefficients are the same in both equations but with opposite signs.
  2. Identify operation to eliminate variable: Identify the operation to eliminate the variable. Here, we add the equations as the coefficients are opposite.
  3. Add equations to eliminate x: Add the equations to eliminate 'x'. (9x+4y)+(9x+5y)=6+(33)(-9x + 4y) + (9x + 5y) = 6 + (-33)\newline9x+4y+9x+5y=27-9x + 4y + 9x + 5y = -27\newline4y+5y=274y + 5y = -27\newline9y=279y = -27
  4. Solve for y: Solve for 'y'. Dividing both sides of the equation by 99 gives us y=279y = -\frac{27}{9}.\newliney=3y = -3
  5. Substitute y into first equation: Substitute y=3y = -3 into the first equation to solve for 'x'. Substitute y=3y = -3 in 9x+4y=6-9x + 4y = 6. We get 9x+4(3)=6-9x + 4(-3) = 6. Simplify to get 9x12=6-9x - 12 = 6. Add 1212 to both sides, we get 9x=18-9x = 18.
  6. Solve for x: Solve for 'x'. Dividing both sides of the equation by 9-9 gives us x=189x = \frac{18}{-9}.\newlinex=2x = -2
  7. Write the solution as a coordinate point: Write the solution as a coordinate point. The solution is (2,3)(-2, -3).

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