Answer:
x = 6 , y = 5
Step-by-step explanation:
Find x :
The interior angles of a square is 90°
Therefore ,
(9x+ 36)° = 90°
9x + 36 - 36 = 90 - 36 [ subtract 36 on both sides ]
9x = 90 - 36 [ - 36 + 36 = 0 ]
9x = 54 [ divide by 9 on both sides ]
x = 6
Find y :
The sides of a square are equal.
Therefore,
7y - 12 = 5 y - 2
7y -5y - 12 = 5y -5y - 2 [ subtract 5y from both sides ]
2y - 12 = 0 - 2 [ 5y - 5y = 0 ]
2y - 12 + 12 = 0 - 2 + 12 [ add 12 on both sides ]
2y + 0 = 10 [ -12 + 12 = 0 ]
2y = 10
y = 5 [ divide by 2 on both sides ]
