РЕШИТЕ УРАВНЕНИЯ ! 0.3(Х-2)-0.2(Х+4)=0.16 1.2*Х+0.8(Х-1.3)=5.96

Question

РЕШИТЕ УРАВНЕНИЯ !

0.3(Х-2)-0.2(Х+4)=0.16

1.2*Х+0.8(Х-1.3)=5.96

Answer 1

1)

0.3x-0.6-0.2(x+4)-0.16=0

0.3x-0.6-(0.2x+0.8)-0.16=0

0.3x-0.6-0.2x-0.8-0.16=0

0.1x-0.6-0.8-0.16=0

0.1x-1.4-0.16=0

0.1x-1.56=0

x=1.56/0.1=15.6

2)

1.2x+0.8x-1.04-5.96=0

2x-1.04-5.96=0

2x-7=0

x=7/2=3.5

Answer 2

1)0,3x-0,6-0,2x-0,8-0,16=0 => 0,1x=-1,56 => x=-15,6. 2)1,2x+0,8x-1,04-5,96=0 => 0,4x=7 => x=17,5