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x+2 = Ax + 2Bx + 3B - 5A
Ax + 2Bx - 5A + 3B = x + 2
A + 2B = 1 (X -5)
-5A + 3B = 2
-5A -10B = -5
-5A + 3B = 2
-13 B= -7
B = 7/13
A + 2B = 1
A + 14/13 = 1
A = -1/13