Проверьте правильно ли решил,и помогите упростить 13х-2-(5х-11)
13х-2-(5х-11)
при Х=0.8
13*0.8-2-(5*0.8-11)
10.4-2-(4-11)
10.4-2-(-7)
10.4-2+7
8.4+7=15.4
Ответ:15.4
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