Question

A student received a coupon for 17% off the total purchase price at a clothing store. Let c be the

original price of the purchase. Use the expression below for the new price of the purchase. Write an
equivalent expression by combining like terms.

Answer 1

c - 0.17c = 0.83c
When you write “c” at the start, or x or whatever, it has an understood (invisible) number 1. So you’re subtracting the decimal on the next variable from 1.