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Find the solution of the system of equations.

{:[-3x-9y=-30],[6x+7y=-6]:}
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Find the solution of the system of equations.\newline3x9yamp;=306x+7yamp;=6 \begin{aligned} -3 x-9 y & =-30 \\ 6 x+7 y & =-6 \end{aligned} \newlineSubmit Answer

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Q. Find the solution of the system of equations.\newline3x9y=306x+7y=6 \begin{aligned} -3 x-9 y & =-30 \\ 6 x+7 y & =-6 \end{aligned} \newlineSubmit Answer
  1. Write Equations: Write down the system of equations to be solved.\newlineWe have the following system of equations:\newline3x9y=30-3x - 9y = -30\newline6x+7y=66x + 7y = -6\newlineWe need to find the values of xx and yy that satisfy both equations simultaneously.
  2. Simplify Equations: Attempt to simplify the equations if possible.\newlineLooking at the first equation, we can divide every term by 3-3 to simplify it:\newline(3x/3)(9y/3)=(30/3)(-3x/-3) - (9y/-3) = (-30/-3)\newlineThis simplifies to:\newlinex+3y=10x + 3y = 10\newlineNow we have a simpler system of equations:\newlinex+3y=10x + 3y = 10\newline6x+7y=66x + 7y = -6
  3. Elimination Method: Use the method of elimination to solve the system of equations.\newlineTo eliminate one of the variables, we can multiply the first equation by 66 so that the coefficient of xx in both equations is the same:\newline6(x+3y)=6(10)6(x + 3y) = 6(10)\newlineThis gives us:\newline6x+18y=606x + 18y = 60\newlineNow we have:\newline6x+18y=606x + 18y = 60\newline6x+7y=66x + 7y = -6
  4. Subtract Equations: Subtract the second equation from the first to eliminate xx.(6x+18y)(6x+7y)=60(6)(6x + 18y) - (6x + 7y) = 60 - (-6)This simplifies to:6x+18y6x7y=60+66x + 18y - 6x - 7y = 60 + 6Which further simplifies to:11y=6611y = 66
  5. Solve for y: Solve for y.\newlineDivide both sides of the equation by 1111 to find the value of yy:\newline11y11=6611\frac{11y}{11} = \frac{66}{11}\newlineThis gives us:\newliney=6y = 6
  6. Substitute and Solve: Substitute the value of yy back into one of the original equations to solve for xx. We can use the simplified version of the first equation, x+3y=10x + 3y = 10: x+3(6)=10x + 3(6) = 10 This simplifies to: x+18=10x + 18 = 10
  7. Final Solution: Solve for xx.\newlineSubtract 1818 from both sides of the equation:\newlinex+1818=1018x + 18 - 18 = 10 - 18\newlineThis gives us:\newlinex=8x = -8