Предмет: Математика, автор: nataliyashloma

Помогите решить уровнения
(21/3)+10*3-10*9=
12/6+20*7-50+(10*3)-30=
10*9+54-(27/3)+20-40+38=

Ответы

Автор ответа: Лиса051
0
1) ° 21:3=7, 10*3=30,10*9=90, 7+30-90= -53
2) ° 10*3=30, 12:6=2, 20*7=140, 2+140-50+30-30=92
3) ° 27:3=9, 10*9=90, 90+54-9+20-40+38=153
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