How to solve for 9-2x=35

9-2x+35

first you want to get rid of the number. so you subtract 9 on both sides. Think of this as a balance scale, what you do on one side must be done on the other.

9-2x+35

-9 - 9

-2x = 26

you always want to do the opposite, so since this was positive 9 you subtract so the 9 is gone.

-2x=26

/-2 / - 2

you divide each side by - 2 and you get

x=-13

since a negative divided by a positive is a negative