use the distributive property to simplify. Multiply the number outside of the parenthesis by each term inside
starting on the left side
6 times 3 is 18
6 times -x is -6x
on the right side
-4 times 2x is -8x
-4 times -1 is 4
so you can rewrite this as
18-6x=-8x+4
Now solve for x. Start by adding 8x to both sides
18+2x=4
subtract 18 from both sides
2x=-14
divide both sides by 2
x=-7