Question

4,72c+2,8c=78,96  решите  уравнение

Answer 1

4,72c+2,8c=7,52c

7,52c=78,96

c=78,96:7,52

c=10,5

Answer 2

4,72с+2,8с=78,96

7,52с=78,96

с=78,96:7,52

с=10,5