SOLUTION: How do you solve x+y=13, x-y=15 by substitution.
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Question 955207: How do you solve x+y=13, x-y=15 by substitution.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
....eq.1
....eq.2
-------------------------- by substitution
....eq.1...solve for
....substitute in eq.2
....eq.2...solve for
go to substitute for , and solve for
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