Question

помогите решить уравнение пожаоуйста
6х-10,2=4х-2,2
15-(3х-3)=5-4х
2(х-0,5)+1=9
8х-15,3=6х-3,3
18-(6х+5)=4-7х
6(х+0,5)-3=9​

Answer 1

$6x - 10.2 = 4x - 2.2 \\ 6x - 4x = - 2.2 + 10.2 \\ 2x = 8 \\ x = 4$

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$15 - (3x - 3) = 5 - 4x \\ 15 - 3x + 3 = 5 - 4x \\ - 3x + 4x = 5 - 15 \\ x = - 10$

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$2(x - 0.5) + 1 = 9 \\ 2x - 1 + 1 = 9 \\ 2x = 9 \\ x = 4.5$

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$8x - 15.3 = 6x - 3.3 \\ 8x - 6x = - 3.3 + 15.3 \\ 2x = 12 \\ x = 6$

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$18 - (6x + 5) = 4 - 7x \\ 18 - 6x - 5 = 4 - 7x \\ - 6x + 7x = 4 - 18 + 5 \\ x = - 9$

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$6(x + 0.5) - 3 = 9 \\ 6x + 3 - 3 = 9 \\ 6x = 9 \\ x = 1.5$

Answer 2

1) 6х-10,2=4х-2,2

6х-4х=-2,2+10,2

2х=8

х=4

2) 15-(3х-3)=5-4х

15-3х+3=5-4х

18-3х=5-4х

-3х+4х=5-18

х=-13

3)2(х-0,5)+1=9

2х-1+1=9

2х=9

х= 9/2

х= 4 1/2

4)8х-15,3=6х-3,3

8х-6х=-3,3+15,3

2х=12

х=6

5)18-(6х+5)=4-7х

18-6х-5=4-7х

13-6х=4-7х

-6х+7х=4-13

х=-9

6)6(х+0,5)-3=9

6х+3-3=9

6х=9

х= 3/2

х= 1 1/2