1) 0,4(x+3)+3,6=0,5(4-2x)
0.4х+1.2+3.6=2-1х
0.4х+1х=2-1.2-3.6
1.4х=-2.8
х=-2
2) (x-5)/(x+3)=5/7
5(х+3)=7(х-5)
5х+15=7х-35
5х-7х=-35-15
-2х=-50
х=25
1) 0,4(x+3)+3,6=0,5(4-2x)
0.4х+1.2+3.6=2-1х
0.4х+1х=2-1.2-3.6
1.4х=-2.8
х=-2
2) (x-5)/(x+3)=5/7
5(х+3)=7(х-5)
5х+15=7х-35
5х-7х=-35-15
-2х=-50
х=25