First arrange this simultaneous equation in the form of:
4x+5y = 33
4x-2y = -2
Subtract the bottom equation from the top equation remembering that a - - is equal to a +:
7y = 35
Divide both sides by 7 to find the value of y:
y = 5
Substitute the value of y into the original equations to find the value of x:
So: x = 2 and y = 5
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2y = 4x + 4y = 2x + 2
4x+2y-8=0 2y=8-4x y=4-2x slope= -2
x = -8, y = 10
-4x=2y-16 +16 +16 (-4x+16)=(2y) /2 /2 y=-2x+8
X = -2(13 + y) / 3x = 5y / 4 - 1