Question

Решить уравнение 8.5z-2.15z+1.5=3.-5z-9.5

Answer 1

$8,5z-2,15z+1,5=3,05z-9,5\\6,35z-3,05z=-9,5-1,5\\3,3z=-11\\z=-frac{11}{3,3}=-frac{110}{33}=-3frac{1}{3}$

Answer 2

8.5z-2.15z+1.5=3.05z-9.5
8.5z-2.15z-3.05z=-9.5-1.5
3.3z=-11
z=-11/3.3
z=-110/33
z=-3 ц 1/3
Ответ: -1 ц 1/3