СРОЧНОО ДАМ 1
50 БАЛОВ

1. 2x - 9 = x
2. 6x-21=14+x
3. x+11=17+2x
4. 2(x-1)+4=7-x
5. 3(4x-5)=4(3x+2)
6. 7(x+3)-7(x-5)=56
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