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OA = 2x+4 --------------- given
OD = 3x+1 ----------------given
The diagonals are equal in rectangle and all bisect each other equally
so adding OA + OD
2x+4+3x+1 =0
5x+5 =0
5x = -5
x = -5 /5
x = -1
evaulating x = -1 in the equation 5x +5= 0
5 (-1) + 5 =0
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