Question

Решить уравнение:
1,7х+2,3-(4,2х+0,9-(2,9х-1,4))=9

Answer 1

1, 7x +2, 3 -( 4, 2x+ 0, 9-2, 9x+1, 4) =9
1, 7x +2, 3- 4, 2x -0, 9+2, 9x-1, 4=9
0, 4x = 9
x=22, 5