Помоги решить с подробным решением: 1) 3х + 2х = 17 = (-27)

2) 6х - 7х = 3,5 * (-1) + 4

3) 1,3х - 3,5х = 11 * (-0,5)

4) 4х - 2 1/3 х = 3 1/3 : (-2)
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