The following system of equations has to be solved using the elimination method:
2x - 4y = -24 ...(1)
7x + 3y = 1 ...(2)
To eliminate x determine 7*(1) - 2*(2)
7*(1) - 2*(2)
=> 14x - 28y - 14x - 6y = -168 - 2
=> -34y = -170
=> y = -170/-34
=> y = 5
To eliminate y determine 3*(1) + 4*(2)
3*(1) + 4*(2)
=> 6x - 12y + 28x + 12y = -72 + 4
=> 34x = -68
=> x = -68/34
=> x = -2
The required solution using the elimination method is (-2, 5)
2x-4y = -24..............(1)
7x +3y = 1..............(2)
First we will multiply (1) by 3 and multiply (2) by 4 then add.
==> 3*(1) ==> 6x -12y = -72
==> 4*(2) ==> 28x +12y = 4
Now we will add both equations:
==> 34x = -68
==> x = -68/34 = -2
==> x = -2
Now we will substitute x= -2 in equation (2) to find y.
==> 7x+3y = 1 ==> 7(-2) + 3y = 1
==> -14 + 3y = 1==> 3y = 15 ==> y= 5
Then, the solution to the system is the pair (-2, 5)
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