Question

Solve the equation.
2(y + 7) = 4y + 14

Answer 1

2y + 14 = 4y + 14
-2y = 0
y = 0

Answer 2

2x-4y=7 (1)
14x-2y=7(2)
multiply (1) by -7
-14x+28y =-49 (3)
add (2) and (3)
26y= -42 y= -21/13
put this value in (1)
2x+84/13=7---> 26x +84=91 ---> 26x=7 x=7/26

Answer 3

2x-4y=14x+2y

x=-0.5y

Then substitute into one of the other equations:

2(-0.5y)-4y=7

y=-7/5

and

x=7/10