7. Use the scenario to create a system of linear equations, and then solve using substitution. The sum of two numbers is 70, and their difference is 30. Find the two numbers using the process of substitution. Let the first number = r and second number = y. (50, 25) (35, 25) (35, 20) O (50, 20)
7. Use the scenario to create a system of linear equations, and then solve using substitution. The sum of two numbers is 70, and their difference is 30. Find the two numbers using the process of substitution. Let the first number = r and second number = y. (50, 25) (35, 25) (35, 20) O (50, 20)
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 32P
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