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zirka9
@zirka9
July 2022
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Помогите решить уравнения:
2(3x-0,5)=6-(x+8)
5-2(x-1)=0,5(8x-4)
1/2(3x+6)-2,5=0,25(4-2x)
1/3(x-4,5)=1/2x-1,2
Помогите пожалуйста!!!
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пимочка
1. 2(3x-0,5)=6-(x+8)
6х-1=6-х-8
6х+х=-2+1
7х=-1
х=-1:7
х=-1/7
2. 5-2(x-1)=0,5(8x-4)
5-2х+2=4х-2
-2х-4х=-2-7
-6х=-9
х=-9:(-6)
х=1,5
3. 1/2(3x+6)-2,5=0,25(4-2x)
1,5х+3-2,5=1-0,5х
1,5х+0,5х=1-0,5
2х=0,5
х=0,5:2
х=0,25
4. 1/3(x-4,5)=1/2x-1,2
1/3 х - 1/150 = 1/2 х -1,2
1/3 х - 1/2 х = -1,2 + 1/150
- 1/6 х = -179 / 150
х= -179/150 : (-1/6)
х=7,16
2 votes
Thanks 5
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Answers & Comments
6х-1=6-х-8
6х+х=-2+1
7х=-1
х=-1:7
х=-1/7
2. 5-2(x-1)=0,5(8x-4)
5-2х+2=4х-2
-2х-4х=-2-7
-6х=-9
х=-9:(-6)
х=1,5
3. 1/2(3x+6)-2,5=0,25(4-2x)
1,5х+3-2,5=1-0,5х
1,5х+0,5х=1-0,5
2х=0,5
х=0,5:2
х=0,25
4. 1/3(x-4,5)=1/2x-1,2
1/3 х - 1/150 = 1/2 х -1,2
1/3 х - 1/2 х = -1,2 + 1/150
- 1/6 х = -179 / 150
х= -179/150 : (-1/6)
х=7,16