Question

(x+10)-12=17 найти значение x.

Answer 1

х+10=17+12
х+10=29
х=29-10
х=19
(19+10)-12=17
29-12=17
17=17

Answer 2

(x+10)-12=17
×+10=17+12
×+10=29
×=29-10
×=19
ПРОВЕРКА:
(19+10)-12=17