Question

помогите пожалуйста срочно надо!!!

Answer 1

1) -х = -8 -10 = -18
х= 18
2) х = 6-21 = -15
3) -5х = -4
х = 4/5 или 0.8
4) 0.5х = 0.1 - 20.1 = -20
х = -40
5) х+3=-7 * 2= -14
х = -14-3 = -17
6) 9-х = -17 * 7 = -119
-х = -119-9= -128
х = 128