0
Anonymous
11x+9=7x+21
11x-7x=4
4x+9=21
21-9=12
4x=12
12 divided by 4= 3
x=3
Wiki User
Chat with our AI personalities
The value of x is -21.
The value of x is 29
2(10)+1
21+21+19+19=80
12 plus 9 equals 21.