Answer :
3(2u + 3) – 2 (1 – u) + 1 = 0
6u + 9 – 2 + 2u + 1 = 0
8u + 8 = 0
u + 1 = 0
u = -1
6u + 9 – 2 + 2u + 1 = 0
8u + 8 = 0
u + 1 = 0
u = -1
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