Solve the System of Equations by Substitution

question 237

Multiple Choice

Solve the system of equations by substitution. ​ ​

• A)(-10,-21)
• B)(5,-10)
• C)(9,-21)
• D)(5,9)
• E)(-21,5)

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A preliminary version of a product that demonstrates its functionality and features, often used for testing and feedback.

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The act of transferring or exchanging information, feelings, or ideas through speech, writing, signals, or behaviors.

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Abstract or physical representations used by engineers to test, analyze, and solve complex problems.

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