Question

Solve: 2x-y=(-3) and y=2x-3/2 by substitution method.

Answer 1

Hey Mate ✌

Here's your answer friend,

2x - y = (-3) ......(1)

and y = 2x - 3/2

==> 2y = 4x - 3 ......(2)

==> From (1) we get,

2x + 3 = y..... (3)

==> Therefore,

by substituting (3) in eq(2) we get,

==> 2y = 4x - 3

==> 2[2x + 3] = 4x - 3

==> 4x + 6 = 4x - 3

==> 4x - 4x = -3 -6

==> 0 = -9

therefore, there are no specific values of X and y.

⭐ Hope it helps you : ) ⭐

Answer 2

2x - y = - 3
2x - (2x-3/2) = - 3
2x - 2x+3/2 = - 3
4x - 2x+3/2 = - 3
2x+3/2 = - 3
2x+3 = - 6
2x = - 9
x =-9/2


2×-9/2 - y= - 3
-18/2 - y =-3
-18 - 2y /2= - 3
-18 - 2y =-6
-2y = 12
y = 12/-2
y = - 6