For each value of x, determine whether it is a solution to 21 = 3x +9.
Is it a solution?
Yes
No
-8.

No

Step-by-step explanation:

If you plug in a -8 into 21=3x+9 you get

21= -15 which is not true

u dumb boi

step-by-step explanation:

x=17

step-by-step explanation:

solve 3x-24=x+10

then that makes it 2x=34 because you subtract an x from both sides to get rid of the one on the right, and then you add 24 to both sides to get rid of the 24 on the left

divide by both sides by 2 to get your answer so that you can get your answer