Question

5+10(-10х-9)=-3 9х-2(-1-х)=х-5

Answer 1

Ответ:

1)х= -0,82  2)х= -0,7

Пошаговое объяснение:

1) 5+10(-10х-9)=-3

  5-100х-90=-3

  -100х=90-5-3

   -100х=82

    х=-0,82

2)9х-2(-1-х)=х-5

   9х+2+х=х-5

   11х-х= -7

   10х= -7

    х= -0,7

Answer 2

Let's solve the given equations step by step.

Equation 1: 5 + 10(-10x - 9) = -3

To simplify this equation, we need to apply the distributive property to the term 10(-10x - 9):

5 + 10(-10x - 9) = -3 5 - 100x - 90 = -3

Combine like terms:

-100x - 85 = -3

To isolate the variable x, we will move the constant term to the other side by adding 85 to both sides:

-100x - 85 + 85 = -3 + 85 -100x = 82

Finally, divide both sides by -100 to solve for x:

x = 82 / -100 x = -0.82

So the solution to Equation 1 is x = -0.82.

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Equation 2: 9x - 2(-1 - x) = x - 5

Again, we'll apply the distributive property to the term -2(-1 - x):

9x - 2(-1 - x) = x - 5 9x + 2 + 2x = x - 5

Combine like terms:

11x + 2 = x - 5

To isolate the variable x, we'll move the constant term to the other side by subtracting 2 and the variable term to the other side by subtracting x:

11x - x = -5 - 2 10x = -7

Divide both sides by 10 to solve for x:

x = -7 / 10 x = -0.7

So the solution to Equation 2 is x = -0.7.

Therefore, the solutions to the given equations are x = -0.82 and x = -0.7.