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Question 713449: How to solve problem y=7-2x
Answer by persian52(161)   (Show Source):
You can put this solution on YOUR website! █ Solve for x█
y=7-2x
Since x is on the right-hand side of the equation, switch the sides so it is on the left-hand side of the equation.
7-2x=y
Since 7 does not contain the variable to solve for, move it to the right-hand side of the equation by subtracting 7 from both sides.
-2x=-7+y
Move all terms not containing x to the right-hand side of the equation.
-2x=y-7
Divide each term in the equation by -2.
-(2x)/(-2)=(y)/(-2)-(7)/(-2)
Simplify the left-hand side of the equation by canceling the common factors.
x=(y)/(-2)-(7)/(-2)
Simplify the right-hand side of the equation by simplifying each term.
x=(-y+7)/(2)
█ Solve for Y now █
y=7-2x
Reorder the polynomial 7-2x alphabetically from left to right, starting with the highest order term.
y=-2x+7
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