Question

-2x+y=-3,-4x+2y=-3 by substitution method​

Answer 1

Invalid equations

Given

Two equations

1 .  y - 2x = - 3

2 .  2y - 4x = - 3

To Find

To Solve given two equation's by substitution method

Solution

• y - 2x = - 3

⇒ y = 2x - 3 ... (1)

• 2y - 4x = -3

Sub. y value here ,

⇒ 2 ( 2x - 3 ) - 4x = -3

⇒ 4x - 6 - 4x = - 3

⇒ - 6 = - 3

But it's impossible

So , We can't solve these equations or else we can say that these are invalid equations

Answer 2

Step-by-step explanation:

-2x+y=-3 ......................1

-4x+2y=-3....................2

substitution method

by eqn 1

y= 2x-3......................3

-4x+2y=-3

-4x+2(2x-3) = -3

-4x+4x-6 = -3

-6 = -3

solution not exit