Question

How do you solve `x - 2y =5` and `2x -4y= 1` using substitution?

Answer 1

No solutions. It is not possible `for 2x -4y = 1` and also at the same time, `2x - 4y = 10`

Explanation:

`x - 2y =5` ======> 1

so, `x = 2y + 5`

`2x - 4y = 1` ======> 2

substituting value of `x` in 2, we get `2*(2y+5) - 4y =1`

=> `cancel(4y) + 10 - cancel(4y) = 1` => `10 = 1` which is not TRUE.

Hence, No Solutions for the given equations.