1) 1.2(2.3x-3.1)+3=3.14x-1.1 2) 5(0,1x-0.5)+1.6=0.4(x-3) 3)80.6-(x-7.98)=63.4 4)...

Question

1) 1.2(2.3x-3.1)+3=3.14x-1.1
2) 5(0,1x-0.5)+1.6=0.4(x-3)
3)80.6-(x-7.98)=63.4
4) (52.3-x)-4.08=17.3
5) 3x+3x-1.4=4.7
6) 6x-2x+3.4=9.2
7) (0.95x-1.82):1.7=3.4
8) (0.85x-1.72):1.3=2.6
Помогите пожайлуста решить уровнения ,Заранее спасибо

Answer 1

1) 1.2(2.3x-3.1)+3=3.14x-1.1
2.76x-3.72+3=3.14x-1.1
2.76x-3.14x= -1.1+3.72-3
-0.38x=0.38
x=0.38÷(-0.38)
x= -1
2)5(0.1x-0.5)+1.6=0.4(x-3)
0.5x-2.5+1.6=0.4x-1.2
0.5x-0.4x=-1.2+2.5-1.6
0.1x= -0.3
x= -0.3:0.1
x= -3
3)80.6-(x-7.98)=63.4
80.6-x+7.98=63.4
88.58-x=63.4
-x=63.4-88.58
-x= -25.18
x= -25.18:(-1)
x=25.18
4)(52.3-x)-4.08=17.3
52.3-x-4.08=17.3
48.22-x=17.3
x=48.22-17.3
x=24.92
6)6x-2x+3.4=9.2
4x+3.4=9.2
4x=9.2-3.4
4x=5.8
x=5.8:4
x=1.45
7)(0.95x-1.82)÷1.7=3.4
0.95x-1.82:1.7=3.4
0.95x-1.82=3.4×1.7
0.95x-1.82=5.78
0.95x=5.78+1.82
0.95x=7.6
x=7.6:0.95
x=8
8)(0.85x-1.72)÷1.3=2.6
0.85x-1.72:1.3 =2.6
0.85x-1.72=2.6×1.3
0.85x-1.72=3.38
0.85x=3.38+1.72
0.85x=5.1
x=5.1:0.85
x=6