Selen13 Selen13

17-01-2017
Mathematics

Answered

When solving a system by substitution, one should

Alook for coefficients that are reciprocals
Bsolve for x or y in one equation first
Clook for coefficients that are the same or opposites
Dalways multiply by -1

Verified Answer :

Anonymous Anonymous

17-01-2017

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

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