Question 127501
9-(3x-2)=21
9-3x+2=21
-3x=21-9-2
-3x=20
x=20/-3
x=-20/3 answer.
pROOF:
9-(3*-20/3-2)=21
9-(-10-2)=21
9-(-12)=21
9+12=21
21=21