(X+X+X):3 .................
..............5,964:71=0,084
Х+40=110
Х=110-40
Х=70
Х-30=170
Х=170+30
Х=200
300-Х=250
Х=300-250
Х=50
38007: (5000-z)=9
5000-z= 38007:9
5000-z= 4223
z= 5000- 4223
z= 777
Ответ:
1) y=12
2)x=26
Пошаговое объяснение:
1) (76 - 5y)*3 + 56 = 104
(76 - 5y)*3 = 104 - 56
(76 - 5y)*3 = 48
76 - 5y = 48 / 3
76 - 5y = 16
-5y = 16 - 76
-5y = -60
y = 12
2) 20*(24 + x) = 1612 - 612
20*(24 + x) = 1000
24 + x = 1000 / 20
24 + x = 50
x = 50 – 24
x = 26