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16-05-2017
Mathematics

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3x-y=-2 y=2x+3 solve by subtitution

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16-05-2017

3x-y=-2
y=2x+3
substitute y into first equation
3x-(2x+3)=-2
distribute
3x-2x-3=-2
add
x-3=-2
+3 both sides

x=1
solve for y
y= 2 (1)=+3
y=2+3

y=5

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