Решите уравнения , Срочно!!!!!!! :
1.)2х+9 = 13-х
2.) 14-у = 19-11у
3.) 0,5х+11 = 4-3ч
4.) 1,2у+1=1-у
5.) 1,7-0,3х = 2+1,7х
6.) 0,8х+14 =2 - 1,6х
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