Answer :

3x-y/3=b, you are isolating b to the other side
calculista

we have

[tex] y=3x+3b [/tex]

solve for b (clear variable b)

Adds -3x on both sides

[tex] y-3x=3x+3b-3x\\ 3b=y-3x [/tex]

Divide by 3 on both sides

[tex] \frac{3b}{3} =\frac{y}{3} -\frac{3x}{3} \\ \\ b=\frac{y}{3}-x [/tex]

therefore

the answer is

[tex] b=\frac{y}{3}-x [/tex]

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