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Find the solution of the system of equations.

{:[3x+12 y=-33],[-5x+6y=3]:}

Find the solution of the system of equations.\newline3x+12yamp;=335x+6yamp;=3 \begin{aligned} 3 x+12 y & =-33 \\ -5 x+6 y & =3 \end{aligned}

Full solution

Q. Find the solution of the system of equations.\newline3x+12y=335x+6y=3 \begin{aligned} 3 x+12 y & =-33 \\ -5 x+6 y & =3 \end{aligned}
  1. Write Equations: Write down the system of equations to be solved.\newlineWe have the following system of equations:\newline3x+12y=333x + 12y = -33\newline5x+6y=3-5x + 6y = 3
  2. Multiply Second Equation: Multiply the second equation by 22 to make the coefficients of yy the same.\newlineMultiplying the second equation by 22 gives us:\newline10x+12y=6-10x + 12y = 6\newlineNow our system of equations is:\newline3x+12y=333x + 12y = -33\newline10x+12y=6-10x + 12y = 6
  3. Eliminate y: Subtract the second equation from the first equation to eliminate y.\newline(3x+12y)(10x+12y)=336(3x + 12y) - (-10x + 12y) = -33 - 6\newlineThis simplifies to:\newline3x+12y+10x12y=3363x + 12y + 10x - 12y = -33 - 6\newlineWhich further simplifies to:\newline13x=3913x = -39
  4. Solve for x: Solve for x.\newlineDivide both sides of the equation by 1313 to isolate x:\newline13x13=3913\frac{13x}{13} = \frac{-39}{13}\newlinex=3x = -3
  5. Substitute and Solve for y: Substitute x=3x = -3 into one of the original equations to solve for y.\newlineUsing the first equation 3x+12y=333x + 12y = -33, substitute xx with 3-3:\newline3(3)+12y=333(-3) + 12y = -33\newline9+12y=33-9 + 12y = -33
  6. Substitute and Solve for y: Substitute x=3x = -3 into one of the original equations to solve for yy. Using the first equation 3x+12y=333x + 12y = -33, substitute xx with 3-3: 3(3)+12y=333(-3) + 12y = -33 9+12y=33-9 + 12y = -33 Solve for yy. Add 99 to both sides of the equation to isolate the term with yy: yy00 yy11 Divide both sides by yy22 to solve for yy: yy44 yy55