Question

1) 3(x-1)-2(x + 2) = 4x+8 2) 4(x + 1,5)+3(1-x) -10;3) 4 (3x + 2) 7 (x+1)=3(x-1):4) 2.5(2x+3) 2(x+2.5) 3.5+ 2x Памагите пж​

Answer 1

Ответ:

1 x= -5

2 x= - 1

3  незнаю ссори

4 0,25 (140х сверху 2 - 132х-525)

Объяснение:

Answer 2

1. Let's solve the equation step by step:

3(x - 1) - 2(x + 2) = 4x + 8

First, distribute the coefficients:

3x - 3 - 2x - 4 = 4x + 8

Combine like terms:

x - 7 = 4x + 8

Move the x term to the left side by subtracting x from both sides:

x - x - 7 = 4x - x + 8

Simplify:

-7 = 3x + 8

Move the constant term to the right side by subtracting 8 from both sides:

-7 - 8 = 3x + 8 - 8

Simplify:

-15 = 3x

Divide both sides by 3 to solve for x:

-15/3 = 3x/3

Simplify:

-5 = x

So the solution to the equation is x = -5.

2. Let's solve the second equation:

4(x + 1.5) + 3(1 - x) - 10

First, distribute the coefficients:

4x + 6 + 3 - 3x - 10

Combine like terms:

x - 1

So the solution to the equation is x = 1.

3. Let's solve the third equation:

4(3x + 2) - 7(x + 1) = 3(x - 1)

First, distribute the coefficients:

12x + 8 - 7x - 7 = 3x - 3

Combine like terms:

5x + 1 = 3x - 3

Move the constant term to the right side by subtracting 1 from both sides:

5x + 1 - 1 = 3x - 3 - 1

Simplify:

5x = 3x - 4

Move the 3x term to the left side by subtracting 3x from both sides:

5x - 3x = 3x - 3x - 4

Simplify:

2x = -4

Divide both sides by 2 to solve for x:

2x/2 = -4/2

Simplify:

x = -2

So the solution to the equation is x = -2.

4. Let's solve the fourth equation:

2.5(2x + 3) - 2(x + 2.5) = 3.5 + 2x

First, distribute the coefficients:

5x + 7.5 - 2x - 5 = 3.5 + 2x

Combine like terms:

3x + 2.5 = 3.5 + 2x

Move the 2x term to the left side by subtracting 2x from both sides:

3x - 2x = 3.5 + 2x - 2x

Simplify:

x = 3.5

So the solution to the equation is x = 3.5.

I hope this helps! Let me know if you have any further questions.