Question

X-3= 0 and 4x+2y-1= 0​

Answer 1

x - 3 = 0 ........................ (1)
4x + 2y - 1 = 0 .............. (2)

From (1):
x - 3 = 0
x = 3

Sub x = 3 into the equation:
4(3) + 2y - 1 = 0

12 + 2y - 1 = 0

2y = -12 + 1

2y = -11

y = -11/2 or -5.5

Answer 2

x-3=0
x=3

4x+2y-1=0
4(3)+2y-1=0
12+2y-1=0
11+2y=0
2y=-11
y=-5.5