Question

story problem

Answer 1

label your variables and set up a system of 2 eq

Answer 2

6 slices of pizza + 5 softdrinks = 31.60
5 slices of pizza + 4 softdrinks = 26.02

so... 1 slice of pizza + 1 softdrink = 31.60 - 26.02 = 5.58

if you multiply that price by 5

5 slices of pizza + 5 softdrinks = 5.58 x 5 = 27.90

if you subtract that from group one:

6 slices of pizza + 5 softdrinks = 31.60
5 slices of pizza + 5 softdrinks = 27.90

that leaves: 1 slice of pizza = 31.60 - 27.90 = $3.70

can't help you with the algebraic notation tho :S

Answer 3

6p + 5d = $31.60
5p + 4d = $26.02
=> p = $3.70 / slice of pizza.