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Solve the system by substitution. y = 2x 3x + 2y = 21
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3 votes
Solve the system by substitution.

y = 2x
3x + 2y = 21

User Bhaskar Dabhi
by
8.3k points

1 Answer

5 votes
y=2x
3x+2y=21
3x+2(2x)=21
3x+4x=21
7x=21
x=3
y=2(3)
y=6
User Naytzyrhc
by
7.8k points
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