Решите уравнения:

1) 2x + 3 ( 5 - x ) = 15,5
2) 15 - 4 ( 7 + 2x ) = 1
3) 3 ( 11 + x ) -( 2x - 5 ) = 11
4) 5 (3 - 2x) - 8 (x-1) = 3+ 22x

( нужно с полным решением)
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