Question

Quien me puede ayudar a resolver esas ecuaciones:

7x + 12 = 2x + 27

4x + 8 = 8x + 2

3x + 40 = 12x - 14

5x - 6 = 7x - 10.4

3.5x + 8 = 6.5x - 4

Ayudaaaaaaaaaaaaaaaaaaa

Answer 1

lo primero que tienes que hacer es juntar las x y al otro lado juntar los números que no tengan la x

$7x - 2x = 27 - 12 \\ 5x = 15 \\ x = 3$

$- 8x + 4x = - 8 + 2 \\ - 4x = - 6 \\ x = \frac{6}{4} \\ x = \frac{3}{2}$

$- 12x + 3x = - 14 - 40 \\ - 9x = - 54 \\ x = 6$

$- 7x + 5x = - 10.4 + 6 \\ - 2x = - 4.4 \\ x = \frac{4.4}{2} \\ x = 2.2$

$- 6.5 x+ 3.5x = - 4 - 8 \\ - 3x = - 12 \\ x = 4$

esas son la respuestas espero haberte ayudado bro

Answer 2

7x + 12 = 2x + 27

R=

7x = 2x + 27 - 12

5x = 15

x=15

—

5

x3

4x +8 = 8x + 2

8= 8x+2 – 4x

8= 4x + 2

8–2 = 4x

6=4x

6

– = 4x

4

6= 4x

6

— = x

4

3

– = x

2

x= 3

-

2

3x + 40 = 12x - 14

40=12x – 14 – 3x

40= 9x -14

40 + 14 =9x

54

— = x

9

6= x

x = 6

5x -6 = 7 x –10.4

-6=7x – 10.4 -5x

-6 = 2x – 10.4

-6 + 10.4 = x

4.4 = 2x

4.4

—— = x

2

2.2= x

x=2.2

3.5x +8 = 6.5 x –4

8= 6x –4 – 3.5x

8= 2.5 x4

8 + 4 = 2.5x

12= 2.5x

12

— = x

25

4.8 = x

x= 4.8