Solve for x
x=0
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x=-15x
Combine -9x and -6x to get -15x.
x+15x=0
Add 15x to both sides.
16x=0
Combine x and 15x to get 16x.
x=0
Product of two numbers is equal to 0 if at least one of them is 0. Since 16 is not equal to 0, x must be equal to 0.
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