пж помогите!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

3 1/3:х=-1 2/3:(-0,75)=
10/3:х=-5/3:(-75/100)
10/3:х=-5/3*(-100/75)
10/3:х=100/45
х=10/3:100/45
х=10/3*45/100
х=15/10=1 5/10

-0,9х-1,5х+4=-5
-2,4х=-5-4
-2,4х=-9
х=-9:(-2,4)
х=-9*(-10/24)
х=90/24=3 18/24=3 3/4