Question

Решите уравнение
1,7x+21+3,1x=57

Answer 1

1.7х+21+3.1х=57
х(1.7+3.1)=57-21
4.8х=36
х=36:4.8
х=7.5

Answer 2

1.7x+21+3.1x=57
3.1x+1.7x=57-21
4.8x=36
x=36:4.8
x=7.5