9y - 18 = 3y
subtract 3y from both sides
6y - 18 = 0
add 18 to both sides
6y = 18
divide by 6 on both sides
y = 3
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For y - 2y - 3y equals 0, y equals 0.
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x+3y=2 x= -5 y = 1
Yes and it works out that x = 3 and y = 4
2x + 3y = 9x = 3, y = 1 therefore 6 + 3 = 9