Tentukan nilai x dari 4x+2y=1

4x + 2y = 1

4x = 1 / 2 y

4x  = 1/2 y

x = 1/2/4 y

x = 1/8 y

4x + 2y = 1

4x = 1 – 2y

x = (1 – 2y)/4

x = ¼(1 – 2y)