Question

$-3(x-2y-4)=-9$

Given the equation above, the value of $x-2y$ is ____ .

Answer 1

We have to find the value of $x-2y$.

Notice that quantity $(x-2y)$ is in the left-hand side expression.

To solve for the quantity $(x-2y)$. Start by dividing both sides of the equation by $-3$.

We will get $x-2y-4=3$

Next, we add four on both sides

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

$x-2y=7$

Thus, the value of $x-2y$ is 7.