Question

A) 3x+5x-2=0 б) x-2x-1=0 в) 4x-12x+9=0

Answer 1

Ответ:

Объяснение:

a) 3x+5x-2 = 0

   8x = 2

   x = 2:8

   x = 0.25

б) x-2x-1 = 0

   -x = 1

    x = -1

в) 4x-12x+9 = 0

   -8x = -9

    x = -9:(-8)

    x = 1 1/8 = 1.125

Answer 2

Let's solve each of these equations step by step:

a) 3x + 5x - 2 = 0

Combining like terms, we have:

8x - 2 = 0

Adding 2 to both sides:

8x = 2

Dividing both sides by 8:

x = 2/8

Simplifying the fraction:

x = 1/4

So the solution to the equation 3x + 5x - 2 = 0 is x = 1/4.

b) x - 2x - 1 = 0

Combining like terms, we have:

-x - 1 = 0

Adding 1 to both sides:

-x = 1

Multiplying both sides by -1 (to isolate x):

x = -1

So the solution to the equation x - 2x - 1 = 0 is x = -1.

c) 4x - 12x + 9 = 0

Combining like terms, we have:

-8x + 9 = 0

Subtracting 9 from both sides:

-8x = -9

Dividing both sides by -8:

x = -9 / -8

Simplifying the fraction:

x = 9/8

So the solution to the equation 4x - 12x + 9 = 0 is x = 9/8.