Question

помогите:
10с-4=8с+18

Answer 1

10с-4=8с+18

10с-8с=18+4

2с=22

с=22:2

с=11

Проверка

10*11-4=8*11+18

110-4=88+18

106=106

Answer 2

10с-4=8с+18 10с-8с=18+4 2с=22 с=22:2 с=11