Question

4x-7=x+6 5x-(4-x)=13 8.9x+17.54=5.4x+2.84 3*(5-x)+13=4*(3x-8)

Answer 1

Ответ:

Ответы так и должны быть дробными? Нигде нет ошибок?

Пошаговое объяснение:

1) 4x-7=x+6

4x-x=7+6

3x=13

x=13/3

2) 5x-(4-x)=13

5x-4+x=13

6x=17

x=17/6

3) 8,9x+17,54=5,4x+2,84

8,9x-5,4x=2,84-17,54

3,5x= -14,7

x= -4,2

4) 3*(5-x)+13=4*(3x-8)

15-3x+13=12x-32

-3x-12x= -32-15

-15x= -47

x=47/15

Answer 2

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

1. $4x - 7 = x + 6$

   Subtract $x$ from both sides:

   $3x - 7 = 6$

   Add 7 to both sides:

   $3x = 13$

   Divide both sides by 3:

   $x = \frac{13}{3}$

2. $5x - (4 - x) = 13$

   Distribute the negative sign:

   $5x - 4 + x = 13$

   Combine like terms:

   $6x - 4 = 13$

   Add 4 to both sides:

   $6x = 17$

   Divide both sides by 6:

   $x = \frac{17}{6}$

3. $8.9x + 17.54 = 5.4x + 2.84$

   Subtract $5.4x$ from both sides:

   $3.5x + 17.54 = 2.84$

   Subtract 17.54 from both sides:

   $3.5x = -14.7$

   Divide both sides by 3.5:

   $x \approx -4.2$

4. $3(5 - x) + 13 = 4(3x - 8)$

   Distribute on both sides:

   $15 - 3x + 13 = 12x - 32$

   Combine like terms:

   $-3x + 28 = 12x - 32$

   Add $3x$ to both sides:

   $28 = 15x - 32$

   Add 32 to both sides:

   $60 = 15x$

   Divide both sides by 15:

   $x = 4$

So, the solutions are:

1. $x = \frac{13}{3}$
2. $x = \frac{17}{6}$
3. $x \approx -4.2$
4. $x = 4$