Question

решить уравнение
t*12/14*31-100=86

Answer 1

t*12/14*31=86+100
t*12/14 = 186/31
t*12=186/31*14
t=186/31*14/12
t=7

Answer 2

12t/434=86+100
12t/434=186
12t=186×434
12t=80724
t=680724÷12
t=6727

Answer 3

а проверять не пробовали?

Answer 4

6727*12/14*31-100 =178,646