Question

2(5-3х)=7х+3
10(х-9)=7
3(5х-3)=-11х+17

Answer 1

2(5-3х)=7х+3

10-6х=7х+3

-6х-7х=3-10

-13х=-7

х=7/13

10(х-9)=7

10х-90=7

10х=7+90

10х=97

х=97/10

3(5х-3)=-11х+17

15х-9=-11х+17

15х+11х=17+9

26х=26

х=1

Answer 2

Ответ:

1)

$2(5 - 3x) = 7x + 3$

$10 - 6x = 7x + 3$

$- 6x - 7x = 3 - 10$

$- 13x = - 7$

$x = frac{7}{13}$

2)

$10(x - 9) = 7$

$10x - 90 = 7$

$10x = 97$

$x = frac{97}{10} = 9.7$

3)

$3(5x - 3) = - 11x + 17$

$15x - 9 = - 11x + 17$

$15x + 11x = 17 + 9$

$26x = 26$

$x = 1$