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9x-45=4x-5
Use the distributive property to multiply 9 by x-5.
9x-45-4x=-5
Subtract 4x from both sides.
5x-45=-5
Combine 9x and -4x to get 5x.
5x=-5+45
Add 45 to both sides.
5x=40
Add -5 and 45 to get 40.
x=\frac{40}{5}
Divide both sides by 5.
x=8
Divide 40 by 5 to get 8.