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2 votes
Substitute

y = 3x-4

x+y=8

User Noahutz
by
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1 Answer

5 votes

Subt y=3x-4 into x+y=8

x+3x-4=8

4x=12

x=3

y=3(3)-4

y=5

User Chad Skeeters
by
7.9k points

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