Ответ:
1) 8-4х-2х=-16
-4х-2х=-16-8
-6х=-16-8
-6х=-24
х=4
a)
8-4x=2x-16
-4x-2x=-16-8
-6x=-24
x=4
б)
0.4x+3.8=2.6-0.8x
0.4x+0.8x=2.6-3.8
1.2x=-1.2
x=-1
в)
3.5-x=8(x+2.8)
3.5-x=8x+22.4
-x-8x=22.4-3.5
-9x=18.9
x=-2.1
г)
0.3(6-2x)=4.5-0.7(x+9)
1.8-0.6x=4.5-0.7x-6.3
-0.6x+0.7x=4.5-6.3-1.8
0.1x=-3.6
x=-36
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Answers & Comments
Ответ:
1) 8-4х-2х=-16
-4х-2х=-16-8
-6х=-16-8
-6х=-24
х=4
Ответ:
a)
8-4x=2x-16
-4x-2x=-16-8
-6x=-24
x=4
б)
0.4x+3.8=2.6-0.8x
0.4x+0.8x=2.6-3.8
1.2x=-1.2
x=-1
в)
3.5-x=8(x+2.8)
3.5-x=8x+22.4
-x-8x=22.4-3.5
-9x=18.9
x=-2.1
г)
0.3(6-2x)=4.5-0.7(x+9)
1.8-0.6x=4.5-0.7x-6.3
-0.6x+0.7x=4.5-6.3-1.8
0.1x=-3.6
x=-36