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JanayPatriece
Answered

Which of the following situations MAY cause someone to use substitution, in order to solve a system of equations?

AAn exact solution is not needed.
BOne of the equations may easily be solved for a variable.
CAn exact solution is needed.
DBoth of the equations are solved for one variable.

Verified Answer :

If you want to substitute, you need to solve an equation for a variable.  I ONLY use this method if I can easily solve one equation for a variable, and then it is a maybe.  For this case use B