Question

15x=190+x
66-16x=10x+144
0,6x+12,9=1,2x-19,5
помогите пожалуйста. :(​

Answer 1

Ответ:

1) 95/7

2) -3

3) 54

Пошаговое объяснение:

....

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Answer 2

$1)15x = 190 + x 8\\ 15x - x = 190 + x - x \\ 15x - x = 190 \\ 15x - 1x \\ (15 - 1)x \\ 14x$

$2)66 - 16x = 10x + 144 \\ 66 - 16x - 10x = 144 \\ - 16x - 10x = 144 - 66 \\ ( - 16 - 10)x \\ - 26x \\ - 26x = 144 - 66 \\ - 26x = 78 \\ x = - 3$

$3)0.6x + 12.9 = 1.2x - 19.5 \\ 13.5 = 1.2 - 19.5 \\ 13.5 - 1.2x = - 19.5 \\ - 1.2x = - 19.5 - 13.5 \\ - 1.2x = - 33 \\ x= 27.5$