SOLUTION: Solve using the substitution method: r=-3s r+4s=10

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Question 486114: Solve using the substitution method:
r=-3s
r+4s=10
Answer by solver91311(24713) About Me  (Show Source):
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Put -3s in place of r in the second equation. Solve for s. Put the newly found value of s in place of s in the first equation and then calculate r.


John

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