Solve for x
x=0
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x-12+3x=-12
Use the distributive property to multiply -3 by 4-x.
4x-12=-12
Combine x and 3x to get 4x.
4x=-12+12
Add 12 to both sides.
4x=0
Add -12 and 12 to get 0.
x=0
Product of two numbers is equal to 0 if at least one of them is 0. Since 4 is not equal to 0, x must be equal to 0.
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