Subtract 4 from both sides of the equation you will end up with 2/7x=4 next multiply 7x by both sides you will end up with 2=28x next divide 28 from both sides you will end up with x=1/14 in fraction form. Hope this helps.
Fisrt let us define the variableslet y be the total cost melinda paysx be the number of games she playedb be the cost of shoe rentalm is the cost of one game y = mx + b y = 4(3) + by = 12 + b