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SIZIF [17.4K]
3 years ago
11

Solve the system using the substitution method 4x+6y=8 3x+y=9

Mathematics
1 answer:
inessss [21]3 years ago
4 0
4x+6y=8
3x+y=9

y = 9 - 3x

4x + 6(9-3x) = 8
4x + 54 - 18x = 8
14x = 46
x = 23/7

y = 9 - 3(23/7)
y = 9 - 69/7
y = - 6/7
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\boxed {\boxed {\sf z=2.2}}

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