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Find the solution of the system of equations.

{:[-4x+4y=-32],[9x+2y=-27]:}

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Find the solution of the system of equations.\newline4x+4y=329x+2y=27 \begin{array}{r} -4 x+4 y=-32 \\ 9 x+2 y=-27 \end{array} \newline(,) (\square, \square)

Full solution

Q. Find the solution of the system of equations.\newline4x+4y=329x+2y=27 \begin{array}{r} -4 x+4 y=-32 \\ 9 x+2 y=-27 \end{array} \newline(,) (\square, \square)
  1. Start by solving system: Let's start by solving the system of equations using the method of substitution or elimination. We will use the elimination method to solve this system of equations. First, we need to make the coefficients of one of the variables the same in both equations so we can eliminate that variable.
  2. Multiply second equation: To make the coefficients of yy the same, we can multiply the second equation by 22. This will give us a new system of equations:\newline11st Equation: 4x+4y=32-4x + 4y = -32\newline22nd Equation (multiplied by 22): 18x+4y=5418x + 4y = -54
  3. Subtract second equation: Now we can subtract the second equation from the first to eliminate yy:(4x+4y)(18x+4y)=32(54)(-4x + 4y) - (18x + 4y) = -32 - (-54)This simplifies to:4x+4y18x4y=32+54-4x + 4y - 18x - 4y = -32 + 54The 4y4y terms cancel out, and we are left with:22x=22-22x = 22
  4. Solve for x: We can now solve for xx by dividing both sides of the equation by 22-22:\newline22x/22=22/22-22x / -22 = 22 / -22\newlinex=1x = -1
  5. Substitute back to find yy: Now that we have the value of xx, we can substitute it back into one of the original equations to find the value of yy. We'll use the first equation:\newline4(1)+4y=32-4(-1) + 4y = -32\newline4+4y=324 + 4y = -32
  6. Isolate term with y: Next, we subtract 44 from both sides to isolate the term with yy:\newline4y=3244y = -32 - 4\newline4y=364y = -36
  7. Solve for y: Finally, we divide both sides by 44 to solve for y:\newline4y4=364\frac{4y}{4} = \frac{-36}{4}\newliney=9y = -9