решите уравнения: 3-5(х+1)=6-4х ; 0,2-2(х+1)=0,4х;
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(это проверка)
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3-5(х+1)=6-4х
3-5х-5=6-4х
-5х+4х=6+5-3
-х=8
х=-8
3-5(-8+1)=6-4*(-8)
0,2-2(х+1)=0,4х
0.2-2х-2=0.4х
-2х-0.4х=2-0.2
-2.4х=1.8
х=-0.75
0.2-2(-0.75+1)=0.4*(-0.75)