Question

Solve 3x - 5y = 15 solve for y

Answer 1

3x - 5y = 15
-3x -3x (subtract 3x from both sides)

-5y = 15 - 3x
/-5 /-5 (divide both sides by -5)

y = -3 + (3/5)y

Answer 2

3x - 15 = 5y

y = 3x - 15
-------
3

Answer 3

3x-5y=15-------(i)
or,3x=15+5y
or,x=15+5y/3---------(ii)


Now, keeping value of x in the equation----(i)


3x-5y=15
or,3*15+5y/3-5y=15
or,45+15y/3=15+5y
or,45+15y=45+15y
or,0=0