Question

Помогите с уравнениями плиз... 1. 7,9x+3=2,3x+5 2. 4*(x+3)=5(x-2) 4. 3. -2*(x-5)+3*(-4)=4x+1) 4. 3*(x-1)=2*(x+2) 6. 2*(9x+3)=3*(1+6x)

Answer 1

Смотри решение во вложении,если помогла нажми спасибо и лучшее решение)

 

Answer 2

7,9x+3=2,3x+5

7,9x-2,3x=5-3

5,6x=2

x=2/5,6

x=1/2.8

 

4*(x+3)=5(x-2)

4x+12=5x-10

4x-5x=-10-12

-x=-22

x=22

 

-2*(x-5)+3*(-4)=4x+1

-2x+10-12=4x+1

-2x-4x=1+12-10

-6x=3

x=-1/2

 

3*(x-1)=2*(x+2)

3x-3=2x+4

3x-2x=4+3

x=7

 

2*(9x+3)=3*(1+6x)

18x+6=3+18x

18x-18x=3-6

x не существует

Answer 3

1. 7.9x + 3 = 2.3x + 5

To solve this equation, we'll start by isolating the variable x on one side of the equation.

Subtracting 2.3x from both sides: 7.9x - 2.3x + 3 = 2.3x - 2.3x + 5 5.6x + 3 = 5

Next, we'll isolate the term with x by subtracting 3 from both sides: 5.6x + 3 - 3 = 5 - 3 5.6x = 2

Finally, we'll solve for x by dividing both sides by 5.6: (5.6x)/5.6 = 2/5.6 x = 2/5.6 x ≈ 0.357

So the solution to the equation is x ≈ 0.357.

2. 4 * (x + 3) = 5 * (x - 2) + 4

To solve this equation, we'll start by simplifying both sides of the equation.

Expanding the left side: 4x + 12 = 5x - 10 + 4

Combining like terms on the right side: 4x + 12 = 5x - 6

Next, we'll isolate the variable x by subtracting 4x from both sides: 4x - 4x + 12 = 5x - 4x - 6 12 = x - 6

To isolate x, we'll add 6 to both sides: 12 + 6 = x - 6 + 6 18 = x

So the solution to the equation is x = 18.

3. -2 * (x - 5) + 3 * (-4) = 4x + 1 + 4

To solve this equation, we'll start by simplifying both sides of the equation.

Expanding the left side: -2x + 10 - 12 = 4x + 5

Simplifying the equation: -2x - 2 = 4x + 5

Next, we'll isolate the variable x by subtracting 4x from both sides: -2x - 4x - 2 = 4x - 4x + 5 -6x - 2 = 5

To isolate x, we'll add 2 to both sides: -6x - 2 + 2 = 5 + 2 -6x = 7

Finally, we'll solve for x by dividing both sides by -6: (-6x)/-6 = 7/-6 x = -7/6 x ≈ -1.167

So the solution to the equation is x ≈ -1.167.

4. 3 * (x - 1) = 2 * (x + 2) + 6

To solve this equation, we'll start by simplifying both sides of the equation.

Expanding the left side: 3x - 3 = 2x + 4 + 6

Combining like terms on the right side: 3x - 3 = 2x + 10

Next, we'll isolate the variable x by subtracting 2x from both sides: 3x - 2x - 3 = 2x - 2x + 10 x - 3 = 10

To isolate x, we'll add 3 to both sides: x - 3 + 3 = 10 + 3 x = 13

So the solution to the equation is x = 13.

5. 2 * (9x + 3) = 3 * (1 + 6x)

To solve this equation, we'll start by simplifying both sides of the equation.

Expanding the left side: 18x + 6 = 3 + 18x

Simplifying the equation: 18x + 6 = 3 + 18x

The equation is true for all values of x. In this case, there are infinitely many solutions.