Answer:
y=√(7A-2x)
Step-by-step explanation:
A=2x+y²/7
Multiplying both sides by 7
7A=2x+y²
7A-2x=y²
Taking square root on both sides
y=√(7A-2x)
Start with
[tex]a=2x+\dfrac{y^2}{7}[/tex]
Subtract [tex]2x[/tex] from both sides:
[tex]a-2x=\dfrac{y^2}{7}[/tex]
Multiply both sides by 7:
[tex]7a-14x=y^2[/tex]
Take the square root of both sides. Remember that this implies a double sign:
[tex]y=\pm\sqrt{7a-14x}[/tex]
