I picked the blue one, was I correct?

Yes!

Step-by-step explanation:

x=4+3y

x= ​2(1+2y) /3

x=1+ ​7y /5

​x=1+3y

Step-by-step explanation:

(The first one)

-3x+9y=-12

−3(x−3y)=−12

x−3y= ​−12 /-3

x−3y= ​12/​3

x−3y=4

x=4+3y

(The second one)

3x-4y=2

3x=2+4y

x= ​2+4y /​3

x= ​2(1+2y) /​3

(The third one)

5x-7y=5

5x=5+7y

x= ​5+7y /5

​​x=1+ ​7y /5

(The fourth one)

-2x+6y=-2

−2(x−3y)=−2

x−3y=1

x=1+3y

Hope this helps you :)

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