найди при каком значении переменной выражения -70x-1x и 139x+70 равны
find at what value of the variable x the expressions -70x-1x and 139x+70 are equal
Equate the 2 expressions:
- 70x - 1x = 139x + 70
- 71x =139x + 70
- 71x - 139x = 70
- 210x = 70
x = 70 / - 210
x = - 1 / 3
