Question

-7x-9x=-40+8 5x-2=2x+7

Answer 1

Ответ:

Пошаговое объяснение:

1)-7х-9х=-40+8

-16х=-48

х=-48/-6

х=8

2)5х-2х=7+2

3х=9

х=3

Answer 2

Ответ:

-7x-9x=-40+8

-16х= 48

х= -3

5x-2=2x+7

5х-2х=2+7

3х=9

х=3

Answer 3

Let's solve each equation step-by-step:

1. Equation 1: -7x - 9x = -40 + 8 Combine the like terms on the left side of the equation: -16x = -32 Now, isolate x by dividing both sides by -16: x = (-32) / (-16) x = 2

So, the solution for the first equation is x = 2.

2. Equation 2: 5x - 2 = 2x + 7 First, let's get all the x terms on one side and the constants on the other side: Subtract 2x from both sides: 5x - 2x - 2 = 2x - 2x + 7 3x - 2 = 7

Next, let's isolate x by adding 2 to both sides: 3x - 2 + 2 = 7 + 2 3x = 9

Finally, divide both sides by 3 to find the value of x: x = 9 / 3 x = 3

So, the solution for the second equation is x = 3.

In summary, the solutions for the given equations are:

1. x = 2
2. x = 3