5+10(-10х-9)=-3
Help me

5 + 10 ( -10х - 9 ) = -3
5 + -100х - 90 = -3
-100х = 90 - 3 - 5
-100х = 82
х= 82 : ( - 100 )
х = - 0.82
Ответ: - 0.82

5-100x-90=-3
-85-100x=-3
-100x=-3+85
-100x=82
x=-0.82