concession stand, seven hot dog(s) and two hamburger(s) cost $12.75, two hot dog(s) and seven hamburger(s) cost $16.50, find the cost of one hotdog and one hamburger

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter1: Introduction To Algebra
Section1.5: Translating Sentences Into Equations
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At the concession stand, seven hot dog(s) and two hamburger(s) cost $12.75, two hot dog(s) and seven hamburger(s) cost $16.50, find the cost of one hotdog and one hamburger 

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