Solve for x
x=45
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2x+10=100
Square both sides of the equation.
2x+10-10=100-10
Subtract 10 from both sides of the equation.
2x=100-10
Subtracting 10 from itself leaves 0.
2x=90
Subtract 10 from 100.
\frac{2x}{2}=\frac{90}{2}
Divide both sides by 2.
x=\frac{90}{2}
Dividing by 2 undoes the multiplication by 2.
x=45
Divide 90 by 2.
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