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Find the solution of the system of equations.

{:[-2x-9y=19],[8x-8y=-32]:}

Find the solution of the system of equations.\newline2x9yamp;=198x8yamp;=32 \begin{aligned} -2 x-9 y & =19 \\ 8 x-8 y & =-32 \end{aligned}

Full solution

Q. Find the solution of the system of equations.\newline2x9y=198x8y=32 \begin{aligned} -2 x-9 y & =19 \\ 8 x-8 y & =-32 \end{aligned}
  1. Simplify Second Equation: Let's start by simplifying the second equation by dividing all terms by 88 to make the coefficient of xx equal to 11.\newlineDivide 8x8x by 88 to get xx.\newlineDivide 8y-8y by 88 to get y-y.\newlineDivide 32-32 by 88 to get xx11.\newlineThe simplified second equation is xx22.
  2. Solve for x: Now, let's solve the simplified second equation for x.\newlinex=y4x = y - 4\newlineWe will use this expression for xx in the first equation to solve for yy.
  3. Substitute xx into First Equation: Substitute x=y4x = y - 4 into the first equation 2x9y=19-2x - 9y = 19.
    2(y4)9y=19-2(y - 4) - 9y = 19
    Distribute 2-2 to both yy and 4-4.
    2y+89y=19-2y + 8 - 9y = 19
    Combine like terms.
    11y+8=19-11y + 8 = 19
  4. Solve for y: Now, let's solve for y.\newlineSubtract 88 from both sides of the equation.\newline11y+88=198-11y + 8 - 8 = 19 - 8\newline11y=11-11y = 11\newlineDivide both sides by 11-11.\newliney=1111y = \frac{11}{-11}\newliney=1y = -1
  5. Substitute yy into xx Expression: With the value of yy found, we can now substitute y=1y = -1 into the expression for xx we found in Step 22.\newlinex=y4x = y - 4\newlinex=14x = -1 - 4\newlinex=5x = -5