Question 857753
 solve this equation by using substitution method. 
6x + 3y = 0
-3x + 3y = 9
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3y = 3x+9
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Substitute for "3y" and solve for "x":
6x + 3x+9 = 0
9x = -9
x = -1
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Solve for "y":
y = x + 3
y = -1=3
y = 2
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Cheers,
Stan H.
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