Question

надо решитьуравнение2.1х+0.4=3.1х-(1.1х+0.4)+0.6

Answer 1

$2.1x+0.4=3.1x-(1.1x+0.4)+0.6 \ 2.1x+0.4=3.1x-1.1x-0.4+0.6 \ 2.1x+0.4=2x+0.2 \ 2.1x-2x=0.2 -0.4 \ 0.1x=-0.2 \ x=-0.2:0.1 \ x=-2$

Answer 2

2.5х=3.1-(1.1х+0.4)+0.6
2.5х=1
х=1:2.5
x=0.4