3. Find the value of x in the following. a) The angles of a quadrilateral are (2x + 4), (2x - 1), (2x + 5) and 2(3x + 2), respectively.
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(2x+4)+(2x-1)+(2x+5)+(2x+5)+2(3x+2)
2x+4+2x-1+2x+5+2x+5+6x+4
12x+12=360
12x=360-12
12x=348
x=348/12
x=29
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