ax-5=b What you have to do is get a to be by itself
So you would add 5 to both sides: ax-5(+5)=b(+5) = ax=b+5
And then divide x by both sides. You divide because a is multiplied by x on the left side, so to move it to the other side you’d have to do the opposite and divide: ax /x=b+5 /x