Explanation:
It is a parrelogram
![\huge\star{\underline{\mathtt{\red{</strong><strong>T</strong><strong>o</strong><strong>}\pink{</strong><strong>f</strong><strong>}</strong><strong>\green{</strong><strong>i</strong><strong>}\blue{</strong><strong>n</strong><strong>}\purple{</strong><strong>d</strong><strong>}\orange{</strong><strong>-</strong><strong>:</strong><strong>}}}}⋆]()
X and Y
Solution
angle a = c. (opposite angles of 11gm is equal)
put the values of and c
x+45 = 3x-13
now take the variables to the l.H.S and number to R.H.S
x-3x = -13-45
-2x. = 58
x. = 58÷2
x. = 29
angle d + c = 180° (cointerior angle)
y + 3(29) + 13 =180°
y + 100 = 180°
y. = 80
Hope it helps