Question

1)1+8(3x+7)=9 2)-2=9-(x+7) 3) 9x-2(-5+7x)=-8x-5 4)-3+4(-7+5x)=9x-9 5)-1+5x=10x+8 6)-1+2x=10x+3

Answer 1

Ответ:

1)1+24x+56=9

24x=9-1-56

24x=-48

x=-2

3)9x-2(-5+7x)=-8x-5

9x+10-14x=-8x-5

-5x+8x=-10-5

3x=-15

x=-5

6) -1x+2x=10x+3

-1х+2х -10х=3

-9х=3

х= -3

Только это

Answer 2

Let's solve each equation step by step:

1. 1 + 8(3x + 7) = 9

Start by simplifying the equation:

1 + 24x + 56 = 9 24x + 57 = 9 24x = 9 - 57 24x = -48 x = -48/24 x = -2

Therefore, the solution for this equation is x = -2.

2. -2 = 9 - (x + 7)

Begin by simplifying the equation:

-2 = 9 - x - 7 -2 = 2 - x x = 2 - 2 x = 0

The solution for this equation is x = 0.

3. 9x - 2(-5 + 7x) = -8x - 5

First, distribute the -2 into (-5 + 7x):

9x + 10 - 14x = -8x - 5

Combine like terms:

-5x + 10 = -8x - 5

Move the terms containing x to one side:

-5x + 8x = -5 - 10 3x = -15 x = -15/3 x = -5

So, the solution for this equation is x = -5.

4. -3 + 4(-7 + 5x) = 9x - 9

First, distribute the 4 into (-7 + 5x):

-3 - 28 + 20x = 9x - 9

Combine like terms:

-31 + 20x = 9x - 9

Move the terms containing x to one side:

20x - 9x = -9 + 31 11x = 22 x = 22/11 x = 2

Therefore, the solution for this equation is x = 2.

5. -1 + 5x = 10x + 8

Move the terms containing x to one side:

-1 - 8 = 10x - 5x -9 = 5x x = -9/5

So, the solution for this equation is x = -9/5 or x = -1.8.

6. -1 + 2x = 10x + 3

Move the terms containing x to one side:

-1 - 3 = 10x - 2x -4 = 8x x = -4/8 x = -1/2

The solution for this equation is x = -1/2.

To summarize:

1. x = -2
2. x = 0
3. x = -5
4. x = 2
5. x = -9/5 or x = -1.8
6. x = -1/2