Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Solve the system by substitution. 8х + 9y 3 — 28 -4x = y Submit Answer
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Transcribed Image Text:Solve the system by substitution. 8х + 9y 3 — 28 -4x = y Submit Answer
Expert Solution
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Step 1

Given system is

8x+9y=-28       - (1)

and 

-4x=y     - (2)

Now substitute equation (2) into (1),

8x+9-4x=-288x-36x=-28-28x=-28x=1

 

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