Answer:
[tex]y = \frac{w}{7} - \frac{3x}{7}[/tex]
Step-by-step explanation:
w = 3x + 7y
First we have to get 7y by itself
Subtract 3x from both sides:
w - 3x = 3x + 7y - 3x
w - 3x = 7y
Now we have to get y by itself, so divide both sides by 7
w - 3x/7 = 7y/7
w/7 - 3x/7 = y
y = w/7 - 3x/7
-Chetan K