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-6x+3y=-9 find y
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Isolate the term 3y in the left side. For it, move the term -6x to the right side changing its sign. You will get
3y = -9 + 6x. (*)
It is the same as to add 6x to both sides of the original equation.
As the next (and the last) step, divide both sides of the equation (*) by 3. You will get
y = 2x - 3.
The assignment is completed.
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