решите уровнение 0, 4×(5х-2)-0,3×(2х-1)=-0,9. Created by 7803084Nik. matematika-ru

решите уровнение 0, 4×(5х-2)-0,3×(2х-1)=-0,9...

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решите уровнение 0, 4×(5х-2)-0,3×(2х-1)=-0,9

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anastérisque 0,4•(5x-2)-0,3•(2x-1)=-0.9
2x-0.8-6.0x+0.3=-0.9
1.4x-0.5=-0.9
1.4x=-0.9+0.5
1.4x=-0.4
X=-0.4:1.4
X=-4/10:14/10
X=-4/10•10/14
X=-2•1/7
X=-2/7

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