-4(x-3)=-x
Multiply the bracket by -4
(-4)(x)=-4x
(-4)(-3)=12
-4x+12=-x
Move +12 to the other side
Sign changes from +12 to -12
-4x+12-12=-x-12
-4x=-x-12
Move -x to the other side
Sign changes from -x to +x
-4x+x=-x+x-12
-4x+x=-12
-3x=-12
Divide both sides by -3
-3x/-3=-12/-3
Answer: x=4
