6 Класс! Упростите выражения:-0,2(2х-1)+4,2(0,5-8х); -(m+2n-7)-(-2m-5n+8)
Решите уравнения:
2(5-3х)=6-5х;
2(1-х)-4(2х+8)=8х+28; 
Дроби:
1   1       3
- + - х= - -
2   4       4
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