Question

ecuaciones de primer grado resolver ayuda porfa ​

Answer 1

Respuesta:

a) x = 1

b) x = $\frac{11}{10}$

c) x = -4

Explicación paso a paso:

a)

$2(3x-1) = 4\\6x - 2 = 4\\6x = 4 + 2\\6x = 6\\x = 6 : 6\\x = 1$

b)

$2x - 5(2-x) = -(3x-1)\\2x -10 + 5x = -3x + 1\\7x - 10 = -3x + 1\\7x + 3x = 1 + 10\\10x = 11\\x = \frac{11}{10}$

c)

4x + 6(x+3) = 5x - 2

4x + 6x + 18 = 5x - 2

10x = 5x - 2 - 18

10x - 5x = -20

5x = -20

x = $-\frac{20}{5}$

x= -4

Answer 2

Respuesta:

veamos si recuerdo bien

Explicación paso a paso:

2 (3x-1) = 4

6x-2= 4

6x = 4+2

6x = 6

6x/6 = 6/6

x=1

-----------------------------------------

2x-5(2-x) =  - (3x-1)

2x -10 5x = -3x+1

2x+5x = -3x+1+10

7x  = -3x+11

7x+3x = 11

10x = 11

-----------------------------------------

4x+6(x+3) = 5x-2

4x+6x+18 = 5x-2

10x+18 = 5x-2

10x = 5x-2-18

10x = 5x-20

10x-5x = -20

5x = -20  

5x / 5 = -20 / 5

x = -4