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\sqrt{2x-7}-2-\left(-2\right)=1-\left(-2\right)
Add 2 to both sides of the equation.
\sqrt{2x-7}=1-\left(-2\right)
Subtracting -2 from itself leaves 0.
\sqrt{2x-7}=3
Subtract -2 from 1.
2x-7=9
Square both sides of the equation.
2x-7-\left(-7\right)=9-\left(-7\right)
Add 7 to both sides of the equation.
2x=9-\left(-7\right)
Subtracting -7 from itself leaves 0.
2x=16
Subtract -7 from 9.
\frac{2x}{2}=\frac{16}{2}
Divide both sides by 2.
x=\frac{16}{2}
Dividing by 2 undoes the multiplication by 2.
x=8
Divide 16 by 2.