Selen13 Selen13

18-01-2017
Mathematics

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When solving a system by substitution, one should
A. look for coefficients that are reciprocals
B. solve for x or y in one equation first
C. look for coefficients that are the same or opposites
D. always multiply by -1

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Аноним Аноним

18-01-2017

B, because to substitute for a variable you have to have an equation to substitute first.

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