x + 2y = 8
3x + 4y =
16
Multiply, the everything in the first equation by
3
By multiplying, your equation should look
like
3x + 6y =
24
3x + 4y = 16
now, subtract 3x with 3x ( also subtract 6y with 4y and 24 with
16)
By subtracting your equation should look
like
2y = 8 divide both sides
by 2
By dividing, your equation should look
like
y = 4 which is your
answer for " y "
Now plug 4 into one of the
equation
x + 2 ( 4 ) =
8 multiply 2 with 4
By
multiplying, your equation should look like
x
+ 8 = 8 subtract 8 on both sides
By
subtracting, your equation should look like
x
= 0 which is your answer for " x "
So, your
answer is x = 0 ; y = 4
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