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Find the solution of the system of equations.

{:[4x+6y=16],[3x-2y=25]:}

Find the solution of the system of equations.\newline4x+6y=163x2y=25 \begin{array}{l} 4 x+6 y=16 \\ 3 x-2 y=25 \end{array}

Full solution

Q. Find the solution of the system of equations.\newline4x+6y=163x2y=25 \begin{array}{l} 4 x+6 y=16 \\ 3 x-2 y=25 \end{array}
  1. Elimination Method: Let's start by solving the system of equations using the method of substitution or elimination. We will use the elimination method to eliminate one of the variables. First, we need to make the coefficients of one of the variables the same in both equations. We can do this by multiplying the second equation by 33 to match the coefficient of yy in the first equation.
  2. New System of Equations: Multiply the second equation by 33 to get a new system of equations where the coefficients of yy are the same:\newline4x+6y=164x + 6y = 16 (Equation 11)\newline9x6y=759x - 6y = 75 (Equation 22 multiplied by 33)
  3. Eliminate y: Now, add Equation 11 and Equation 22 to eliminate y:\newline(4x+6y)+(9x6y)=16+75(4x + 6y) + (9x - 6y) = 16 + 75\newlineThis simplifies to:\newline4x+9x=914x + 9x = 91
  4. Solve for x: Combine like terms to solve for x:\newline13x=9113x = 91\newlineDivide both sides by 1313 to find the value of x:\newlinex=9113x = \frac{91}{13}\newlinex=7x = 7
  5. Substitute xx into Equation: Now that we have the value of xx, we can substitute it back into one of the original equations to solve for yy. Let's use Equation 11:\newline4x+6y=164x + 6y = 16\newlineSubstitute x=7x = 7 into Equation 11:\newline4(7)+6y=164(7) + 6y = 16
  6. Solve for y: Perform the multiplication:\newline28+6y=1628 + 6y = 16\newlineSubtract 2828 from both sides to solve for y:\newline6y=16286y = 16 - 28\newline6y=126y = -12\newlineDivide both sides by 66 to find the value of y:\newliney=12/6y = -12 / 6\newliney=2y = -2