помогите плиз Решите уравнение.
А) 0,6(х+7) – 0,5(х-3) = 6,8
Б) 0,3(х-2) – 0,2(х+4) = 0,6
Г)6х –(9х+7)=11
Д)9х-(3х-4)=2(3х+1)
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