Помогите пж!!!!Срочно!

-(45/10)*14/9=-7

-8 2/9+7=-1 2/9

-2 1/4*(-1 2/9)=-9/4*(-11/9)=11/4

11/4-5 3/8=

22/8-5 3/8=22/8-4 18/8=22/8-3 26/8=

=-3 4/8=-3 1/4

-1,2x=4,8*5

-1,2x=24

x=24:(-1,2)

x=-20

5x-2=3x+3/4

5x-3x=3/4+2

2x=2 3/4

x=11/4*1/2

x=11/8=1 3/8