Question

Помогите срочно!!!!!!!!!!!

Answer 1

1)9x=(/3-5/6)*8
9x=-3/6*8
9x=-4
x=-4/9

2) 20x+160/15=1/6-4/15
20x=1/6-4/15-160/15
20x=(4*160/60-10*1/60-4*4/60)
20x=-646/60
x=-646/60*1/20

x=-646/120
x=- 5 23/60
3)