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Anonymous
5x - 4 = -4add 4 to both sides5x = 0x must equal 0.
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5x - 4 = 3x + 6 5x - 3x = 6 + 4 2x = 10 x = 5
5x=4y=-20 x=-4 y=-5 (-4,-5) is the ordered pair
3x + 2x = 5x. 5x= (-4) X = (-4)/5 x= -0.8
7x-5x=8 2x=8 x=4
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