(10+x)-12,0567=17,879
10+x= 17,879 + 12.0567
10+x= 29.9357
x= 29.9357 - 10
x= 19.9357
ответ:x= 19.9357
(10+x)-12,0567=17,879
10+x= 17,879 + 12.0567
10+x= 29.9357
x= 29.9357 - 10
x= 19.9357
ответ:x= 19.9357