Question 17101
-3(2x+9)=21
what you need to do first is times -3 by 2x and 9
(-3*2x)+(-3*9)=21
-6x+-27=21
then add 27 to both sides
-6x(+27)(-27)=21+(27)
-6x=48
divide -6 on both sides
x=-8