Answer:
[tex]y = -\frac{20-x}{7}[/tex]
Step-by-step explanation:
To solve x - 7y = 20 for y:
Subtract x from both sides:
x - x - 7y = 20 - x
-7y = 20 - x
Divide both sides by -7 to isolate y:
[tex]\frac{-7y}{-7} = \frac{20-x}{-7}[/tex]
[tex]y = -\frac{20-x}{7}[/tex]
