Find the length of lm show your work.

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.