Question

Решите уравнение 1,7x+21+3,1x=57

Answer 1

1.7х+21+3.1х=57
4.8х=57-21
4.8х=36
х= 36:4.8
х=31.2

Answer 2

4.8x+21=57 4.8x=57-21 4.8x=36 x=36:4.8 x=360:48 x=7.5 Ответ: х=7.5