Предмет: Математика, автор: Neklegoboy1

решите упав. 2(6х+1,85)-0,7=1,3х

Ответы

Автор ответа: ГородскаяОхотница

2 (6х + 1,85) - 0,7 = 1,3х
12х + 3,7 - 0,7 = 1,3х
12 - 1,3х = 0,7 - 3,7
10,7х = -3
х = - $frac{30}{107}$

Автор ответа: andrisd

2(6x+1.85)-0.7=1.3x
12x+3.7-0.7=1.3x
12x+3=1.3x
12x-1.3x=-3
10.7x=-3
x=-3/10.7≈-0.28

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