The sum of three numbers, call them x, y, and z, is 7. The number y is one less than three times the value of x. If you subtract z twice from y, the result is the same as twice the value of y. Set up a system of equations and solve them using algebraic methods.

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
Chapter9: Systems Of Linear Equations
Section9.7: Puzzle Problems
Problem 19P
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The sum of three numbers, call them x, y, and z, is 7. The number y is one less than three
times the value of x. If you subtract z twice from y, the result is the same as twice the value of y.
Set up a system of equations and solve them using algebraic methods.

 

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