In the following figures GUNS and RUNS are parallelograms.

(i) Opposite sides are equal in a parallelogram.

$\therefore 3 \mathrm{y}-1=26$

$3 \mathrm{y}=27$

$\mathrm{y}=9$

Similarly, $3 \mathrm{x}=18$

x = 6

(ii)

Diagonals bisect each other in a parallelogram.

$\therefore \mathrm{y}-7=20$

$\mathrm{y}=27$

$\mathrm{x}-\mathrm{y}=16$

$\mathrm{x}-27=16$

$\mathrm{x}=43$