Q. Find the solution of the system of equations.4x+6y=163x−2y=25
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 3 to match the coefficient of y in the first equation.
New System of Equations: Multiply the second equation by 3 to get a new system of equations where the coefficients of y are the same:4x+6y=16 (Equation 1)9x−6y=75 (Equation 2 multiplied by 3)
Eliminate y: Now, add Equation 1 and Equation 2 to eliminate y:(4x+6y)+(9x−6y)=16+75This simplifies to:4x+9x=91
Solve for x: Combine like terms to solve for x:13x=91Divide both sides by 13 to find the value of x:x=1391x=7
Substitute x into Equation: Now that we have the value of x, we can substitute it back into one of the original equations to solve for y. Let's use Equation 1:4x+6y=16Substitute x=7 into Equation 1:4(7)+6y=16
Solve for y: Perform the multiplication:28+6y=16Subtract 28 from both sides to solve for y:6y=16−286y=−12Divide both sides by 6 to find the value of y:y=−12/6y=−2