Решите уравнения:
1. 7 x = - 30 + 2 x
2. 16 - 18 x =-25 х-12
3. -17х +20= 7х - 28
4. 9(х - 1) = х + 15
5. (11 х + 14) -( 5 х - 8 ) = 25
6. 12 - 4( х - 3 ) = 39 - 9 х;
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