The amount spent for 6 meals = $48
The coupon for a regular price of each meal is =$8
Leting p= regular price of each meal then an equation for regular price of each meal will be;
For 6 meals = $48
For 1 meal = $48/6 = $8
Letting p to be the regular price of a meal
This will be;
6 {p-$8} = $48 -----this means p minus the off coupon price multiplied by total number of meals, 6, should give $48 as the paid total amount.
Solving the equation will have;
6p - $48 = $48
6p = $48 + $48