Solve for x
x=8
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5x+9=49
Square both sides of the equation.
5x+9-9=49-9
Subtract 9 from both sides of the equation.
5x=49-9
Subtracting 9 from itself leaves 0.
5x=40
Subtract 9 from 49.
\frac{5x}{5}=\frac{40}{5}
Divide both sides by 5.
x=\frac{40}{5}
Dividing by 5 undoes the multiplication by 5.
x=8
Divide 40 by 5.
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