To isolate x, we can begin by adding 3 to both sides of the equation:
3x - 3 + 3 = 18 + 3
Simplifying the left side by cancelling out the -3 and the +3, we have:
3x = 21
Finally, we can solve for x by dividing both sides of the equation by 3:
3x/3 = 21/3
x = 7
Therefore, x = 7 is the solution to the equation 3x-3=18.
Solve the equation 3x-3=18
1 answer