3(x-3) = 21
First, distribute the 3 on the left side of the equation:
3x - 9 = 21
Now, add 9 to both sides of the equation to isolate the variable:
3x = 30
Finally, divide by 3 to solve for x:
x = 10
Therefore, the solution to the equation 3(x-3) = 21 is x = 10.
3(x−3)=
21
1 answer