Here is your answer
The sides of length 40 and (5x+10) are of same length.
So, 5x+10= 40
=> 5x= 40-10
=> x= 30/5
=> x= 6
HOPE IT IS USEFUL
The top and bottom are the same length:
5x +10 = 40
Subtract 10 from each side:
5x = 30
Divide both sides by 5:
x = 30/5
x = 6
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