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3(3x-2) = 2(2x+7)
9x-6 = 4x+14
9x-4x = 14+6
5x = 20
x = 4
4.
1/2x + 2 = 1/3 x +5
1/2 x - 1/3 x = 5-2
1/6 x = 3
x = 18