3x − 4y = 12
2x + 6y = 18
Choose all of the equations that could be used whe...
![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 06.03.2020 03:12, coolcat3190
3x − 4y = 12
2x + 6y = 18
Choose all of the equations that could be used when solving this system by substitution.
x = 9 − 3y
y = 18 − 3x
y = 3x + 3
x = 4
3
y + 4
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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