Ответы на вопрос:
( 87 - х * 9 ) * 40 =960
87 -х * 9 = 960 : 40
87 - х * 9 = 24
х * 9 = 87 - 24
х * 9 =63
х = 63 : 9
х =7
проверка :
( 87 - 7 * 9 ) * 40 = 960
960 = 960
**************************************************************************************************************
Популярно: Математика
-
Ilya111191026.12.2021 23:18
-
myagkixmatveeva13.05.2022 02:15
-
Mushina15.10.2020 17:04
-
LlesyaLis23.08.2020 18:45
-
PAMAGITE1202.08.2022 12:50
-
Oles111502.10.2020 12:38
-
kristinalobanova607.04.2022 09:26
-
ДашаЛис5609.03.2023 10:13
-
dashaKrylova4102.12.2021 22:54
-
натик6507.11.2020 00:08