i am thinking of a number. i multiply by nine and add 25 I get the same answer if i multiply by four and add by 10
9x +25 = 4x + 10 solve for x
9x -4x + 25 = 4x -4x + 10
5x = 10 - 25
5x = -15
x = -3
Great Job!
I didn't know how to do it.. :D
