Answer:
Multiply the numbers inside the parenthesis with the number outside. In the case of the negative, use -1
Explanation:
5(x-4)+3x-9x=6-(2x+5)+8x
5(x)- 5(4) +3x-9x=6 -(2x)-(5)+8x
5x-20+3x-9x=6-2x-5+8x
-x-20=6x+1
-x-6x=20+1
-7x=21
-7x/-7=21/-7
x=-3