You can also write this as the following: x-10=90/3 then you can solve it x-10=30 then you solve this equation so you add 10 to both sides because you have to do the inverse operation then you would end up with x=40 you can also check this to see if your answer is right you plug in 40 for x you would have something similar to this 40-10=90/3 30=30 so 40 is right 40 is the final answer
