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44 votes
Solve the system by substitution. -x+y=30 x=7y

User JakubRi
by
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1 Answer

26 votes
26 votes

Answer:

x = -35

y = -5

Explanation:

x = 7y

-x + y = 30

y - x = 30

y - (7y) = 30

-6y = 30

y = -5

x = 7(-5)

x = -35

User Kadijah
by
2.9k points