Question

Вопрос №37285

Answer 1

t+6.8=9t+10

6.8-10=9t-t

8t=-3.2

t=-0.4

Answer 2

t+6.8=9t+10 ,

t-9t=10-6.8 ,

-8t=3.2 ,

t=-3.2/8 ,

t=-0.4 .