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anonymous
 4 years ago
In order to solve a system of equation by substitution, you
must always solve for y in one of the equations and then
backsubstitute.
true or false
anonymous
 4 years ago
In order to solve a system of equation by substitution, you must always solve for y in one of the equations and then backsubstitute. true or false

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0why cant you solve for x what is the difference

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0it depend on what type of unknown you use. like in your question, the unknown is in term of y.

Directrix
 4 years ago
Best ResponseYou've already chosen the best response.1False. You could solve for x and back substitute. Or, what if your system of equations had no yvariable Such as: a + b = 7 5a  7b = 10
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