At first, I changed the x for 5 so we can multiply it by 5 so : Y=5x-3 Y=5(5)-3 Y= 15-3 Y= 12 With this, we know that 12 is the input of Y, and to be sure I replaced the Y by 12 so that the result can be the 5 given for X to confirm it. Y=5x-3 12=5x-3 15=5x 5=x
