To decorate the bulletin board, wanda cut a length of ribbon into 7 equal sections, with a 16.2- inch piece of ribbon left over. the original length of ribbon was 17.09 inches. a write and solve an equation for this situation. be sure to define your variables. b.how long was each of the 7 equal sections of ribbon? c. if wanda combines 3 of those equal sections together lengthwise to decorate the board, how long will the combined piece of ribbon be?