Question

1) x+9= -9x2)3x-8= -x3) -7=5(x+5)​

Answer 1

Решение и ответ:

1) x + 9 = -9x

  x + 9x = -9

  10x = -9

   x = -9 ÷ 10

  x = -0.9

2) 3x - 8 = -x

    3x + x = 8

    4x = 8

    x = 8 ÷ 4

    x = 2

3) -7 = 5(x + 5)

   -7 = 5x + 25

    5x = -7 - 25

    5x = -32

    x = -32 ÷ 5

    x = -6.4

Answer 2

To solve each of these equations, you'll need to isolate the variable (x) on one side of the equation. Here are the steps to solve each of the equations:

1. x + 9 = -9x

   Add 9x to both sides to get all the x terms on one side: x + 9x = 0

   Combine like terms: 10x = 0

   Now, divide both sides by 10 to isolate x: (10x)/10 = 0/10 x = 0

So, the solution to the first equation is x = 0.

2. 3x - 8 = -x

   Add x to both sides to get all the x terms on one side: 3x + x - 8 = 0

   Combine like terms: 4x - 8 = 0

   Add 8 to both sides to isolate 4x: 4x - 8 + 8 = 0 + 8 4x = 8

   Now, divide both sides by 4 to isolate x: (4x)/4 = 8/4 x = 2

So, the solution to the second equation is x = 2.

3. -7 = 5(x + 5)

   Distribute the 5 on the right side of the equation: -7 = 5x + 25

   Now, subtract 25 from both sides to isolate 5x: -7 - 25 = 5x + 25 - 25 -32 = 5x

   Finally, divide both sides by 5 to isolate x: (-32)/5 = (5x)/5 x = -32/5

So, the solution to the third equation is x = -32/5 or -6.4.