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ZanzabumX
[31]
3 years ago
11
Solve the system by substitution. y = 2x 3x + 2y = 21
Mathematics
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1
answer:
7nadin3
[17]
3 years ago
8
0
Y=2x
3x+2y=21
3x+2(2x)=21
3x+4x=21
7x=21
x=3
y=2(3)
y=6
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