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8x-72-9\left(x-8\right)=x+8-\left(x-2\right)
Use the distributive property to multiply 8 by x-9.
8x-72-9x+72=x+8-\left(x-2\right)
Use the distributive property to multiply -9 by x-8.
-x-72+72=x+8-\left(x-2\right)
Combine 8x and -9x to get -x.
-x=x+8-\left(x-2\right)
Add -72 and 72 to get 0.
-x=x+8-x-\left(-2\right)
To find the opposite of x-2, find the opposite of each term.
-x=x+8-x+2
The opposite of -2 is 2.
-x=8+2
Combine x and -x to get 0.
-x=10
Add 8 and 2 to get 10.
x=-10
Multiply both sides by -1.