Step-by-step explanation:
given
y -2x = 1
y = 1 + 2x..... equation 1
3x - 4y = 1 ......equation 2
Now putting y = 1 + 2x in equation 2
3x - 4 ( 1 + 2x) = 1
3x - 4 - 8x = 1
- 5x = 1 +4
- 5x = 5
Therefore x = -1
Now putting x = -1 in equation 1
y = 1 + 2* (-1)
= 1 - 2
= -1
y-2x=1
3x-4y=1
y=1+2x
3x-4y=1
y=1+2x
3x-4(1+2x)=1
y=1+2x
3x-4-8x=1
y=1+2x
-5x-4=1
y=1+2x
-5x=1+4
y=1+2x
-5x=5
y=1+2x
x=-1
y=1+2*(-1)
x=-1
y=1+(-2)
x=-1
y=-1
x=-1
