Question

1.7х+21+3,1х=57 решите уравнение

Answer 1

1.7х+21+3,1х=57

4.8х+21=57

4.8х=57-21

4.8х=36

х=36:4.8

х=7.5

Answer 2

1,7х+21+3,1=57

4,8х+21=57

4,8х=57-21

4,8х=36

х=36 : 4,8

х=7,5