Решите уравнение: а) -15 ∙(-13х) = -26 ∙ (-30) б) 5,4 ∙ (-х) = 0,6 ∙ (-36) в) –х ∙ (-0,25) = -15 ∙ (-25) г) -3(3у + 4) + 4(2у – 1) =0 д) -40(-7х + 5) = - 1600
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