Question

IF $x-2y=-1$, $y=-\frac{1}{2}$, then find the value of $x$

• A. $-2$
• B. $-1$
• C. $0$
• D. $2$

Answer 1

The correct option is A $-2$

Given:

$x-2y=-1$.....................[1]

$y=-\frac{1}{2}$..................[2]

Putting $y=-\frac{1}{2}$ in equation $1$:

$x-2\times -\frac{1}{2}=-1$

$⟹x+1=-1$

$⟹x=-2$