Question

(5x+6)-7=4-9(6x-9)
2-4(3x-7)=3+5(4x+1)
,7-3,5(2x-1)=10,2
,9(x-0,2)+4,2=6,4x+5 срочно пж

Answer 1

Ответ:

1)

(5х+6)-7=4-9(6х-9)

5х+6-7=4-54х+81

59х=86

х=86/59

2)

2-4(3х-7)=3+5(4х+1)

2-12х-28=3+20х+5

-32х=34

х=-16/17

3)

7-3,5(2х-1)=10,2

7-7х+3,5=10,2

-7х=-0,3

х=0,3/7

4)

9(х-0,2)+4,2=6,4х+5

9х-1,8+4,2=6,4х+5

2,6х=2.6

х=1