Помогите решить уравнения. Пропустили тему. Даю 80 баллов 1) 3*(0,4х+7)-4*(0,8х-3)=2
2) 4*(0,2х-7)-5*(0,3х+6)=5
3) 0,4*(6х-7)=5*(3х+7)
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