Ответ:
Пошаговое объяснение:
А)
- 3х + 12 - 4х – 25 = 8х – 41 +5 + 23х;
-7x - 13 = 31x - 36
31x + 7x = 36 - 13
38x = 23
x = 23 : 38
x = 23/38
Б)
13у – 2у + 9 – 12у = - 7у – 36 – 4у + 1;
-y + 9 = -11y - 35
11y - y = -35 - 9
10y = -44
y = -44 : 10
y = -4,4
В)
- 5 -4b +12 +100 – 35b = 8b + 2b +34 – 2b – 23;
-39b + 107 = 8b + 11
8b + 39b = 107 - 11
47b = 96
b = 96 : 47
b = 2 2/47
Г)
7m + 5m – 4 – 4m +13 = -13 + 55 + 3m +35.
8m + 9 = 3m + 77
8m - 3m = 77 - 9
5m = 68
m = 68 : 5
m = 13,6