Question

реши уравнение
2.1х + 0.4 = 3.1х - (1.1х + 0.4) + 0.6

Answer 1

$2.1x + 0.4 = 3.1x - (1.1x + 0.4) + 0.6$
$2.1x + 0.4 = 3.1x - 1.1x - 0.4 + 0.6$
$2.1x - 3.1x + 1.1x = -0.4 - 0.4 + 0.6$
$0.1x = -0.2$       | *10
$x = -2$

Answer 2

2,1х + 0,4=3,1х-(1,1х+0,4)+0,6
2,1х+0,4=3,1х-1,1х-0,4+0,6
0,1х=-0,8+0,6
х= 0,1/-0,2=-0,5