Предмет: Алгебра, автор: gfhghfjgf

пж срочно срочно !!!!!!!!!!!!!

Приложения:

Ответы

Автор ответа: ksuhoi

Ответ:

5.1 -2

5.2 -2

6.1 -19

6.2 13

Объяснение:

5.1

$0.6 - x = 2.8 + 0.1x \\ - x - 0.1x = 2.8 - 0.6 \\ - 1.1x = 2.2$

х = -2

5.2

$2.3 - 0.5x = 4.9 + 0.8x \\ - 0.5x - 0.8x = 4.9 - 2.3 \\ - 1.3x = 2.6 \\ x = - 2$

6.1

$\frac{x - 3}{2} + 4 = \frac{x - 2}{3} \\ 3(x - 3) + 24 = 2(x - 2) \\ 3x + 15 = = 2x - 4 \\ 3x - 2x = - 4 - 15 \\ x = - 19$

6.2

$2 + \frac{x + 17}{5} = \frac{3x - 7}{4} \\ 40 + 4(x + 17) = 5(3x - 7) \\ 40 + 4x + 68 = 15x - 35 \\ 4x - 15x = - 35 - 108 \\ - 11x = - 143x \\ x = 13$

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