If $3x + 5y = 8$ and $5x + 3y = 24$,then $x - y = \ldots$

If in a rectangle,the length is increased and breadth reduced each by $2$ units,the area is reduced by $28$ square units. If,however,the length is reduced by $1$ unit and the breadth increased by $2$ units,the area increases by $33$ square units. Find the area of the rectangle.

The equations $\frac{2}{3} x + \frac{3}{2} y = 5$ and $\ldots \ldots \ldots$ are the same.

The general form of a linear equation in two variables is .......... (where,$a^{2}+b^{2} \neq 0$).

Solve the following pairs of equations by cross-multiplication method:
$3x - 4y = 17$
$4x - 5y = 21$

Solve the following pair of linear equations using a graph: $3x + 4y = 6$ and $3x + 4y = 19$.