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kk
Okay, so make a triangle and label all the sides going counter clockwise. We'll call AB x. So AD is 3 more than twice AB. So in equation form AD= 2x+3. The opposite sides are equal to that because that is how rectangles work. Then make an equation x+x+2x+3+2x+3=30
Then just solve for x and that is your answer: 6x+6=30 6x=24 x=4
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