839, решите уравнения. 1) 3x - 15 = x + 3
2) 7 - 3x = x + 11
3) 2(x + 3) = x + 13
4) 4(5 - x) = 3x - 1
5) 3(x - 2) = x + 4
6) 5(x - 1) = 4x + 3
2) 7 - 3x = x + 11
3) 2(x + 3) = x + 13
4) 4(5 - x) = 3x - 1
5) 3(x - 2) = x + 4
6) 5(x - 1) = 4x + 3
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