Question

6x-4=-8-5+3x=-9x2x-8=-2(x+6)-(-4+x)=2x(5-9x)-(3+6x)=-7​

Answer 1

Ответ:

6x-4=-8

6x=-8-4

6x=-12

X=-2

Answer 2

Ответ:

1) х=(-2/3)

2)х = 5/12

3)х = (-1)

4)х = 4/3

5)х = 3/5 или 0.6

Answer 3

To solve these equations, we'll take them one by one:

1. 6x - 4 = -8 - 5 + 3x

Combine like terms: 6x - 4 = -13 + 3x

Move the variable terms to one side and constants to the other side: 6x - 3x = -13 + 4

Simplify: 3x = -9

Now, divide both sides by 3 to solve for x: x = -9 / 3 x = -3

2. 2x - 8 = -2(x + 6) - (-4 + x)

First, distribute the -2 on the right side: 2x - 8 = -2x - 12 + 4 - x

Combine like terms: 2x - 8 = -3x - 8

Move the variable terms to one side and constants to the other side: 2x + 3x = -8 + 8

Simplify: 5x = 0

Now, divide both sides by 5 to solve for x: x = 0

3. 2x(5 - 9x) - (3 + 6x) = -7

First, distribute the 2x on the left side: 10x - 18x^2 - 3 - 6x = -7

Combine like terms and set the equation to zero: -18x^2 + 10x - 6x - 3 + 7 = 0

Simplify: -18x^2 + 4x + 4 = 0

Now, to solve this quadratic equation, we can use the quadratic formula: x = (-b ± √(b^2 - 4ac)) / 2a

where a = -18, b = 4, and c = 4

x = (-(4) ± √((4)^2 - 4 * (-18) * 4)) / 2 * (-18)

x = (-4 ± √(16 + 288)) / -36

x = (-4 ± √304) / -36

x = (-4 ± 4√19) / -36

Now, simplify further by factoring out -4: x = (4 ± 4√19) / 36

x = (1 ± √19) / 9

So, the two solutions for x are: x = (1 + √19) / 9 x = (1 - √19) / 9

Please note that the last equation resulted in two solutions because it was a quadratic equation.