linear signs of variable?

Question by upeng: linear signs of variable?
linear signs of variable
help me plx
solve by eliminating or addition meth.
a) 4x+2y=4
6x+2y=8

b) 3x+4y=4
-3x-2y=-3

c) x+2y=10
2x+y=6

help me plz…

Best answer:

Answer by Robert M
Multiply second equation by -1 and add to get x=2 so y=-2 2. Add to get y=1/2 then x=2/3 3. X=2/3 y=14/3

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