167. Решите уравнения: 1) (2x+1) + 3x = 16;
2) (x-4)+(x+6) = 4;
3) (х – 5) - (5 – 3x) = 2;
4) 23 - (х + 5) = 13.
Помогите пожалуйста
Заранее спасибо
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