Bella has $0.66 worth of pennies and nickels. She has 6 more nickels than pennies. Determine the number of pennies and the number of nickels that Bella has.
# pennies = x value in pennies = .01 x
# nickles = x+6 value in nickles = .05 (x+6) added together = .66
.01x + .05 (x+6) = 0.66 solve for x (pennies) then nickles = x+6