Question

3x - 12= 21

x=10
x=11
x=3
x=4

Answer 1

[AI-generated answer — Bot GPT 3.5]

To solve the equation, we need to isolate the variable x on one side.

3x - 12 = 21

Adding 12 to both sides of the equation:

3x - 12 + 12 = 21 + 12

3x = 33

Dividing both sides by 3:

3x/3 = 33/3

x = 11

So, the solution is x = 11.