Question

Me ayudan son unas ecuaciones porfa son 25 puntos

Answer 1

Respuesta:

Explicación paso a paso:

2(x+8)=40-x

2x+16=40-x

2x+x=40-16

3x=24

x=24/3

x=8

3(2x-5)=45+4x

6x-15=45+4x

6x-4x=45+15

2x=60

x=60/2

x=30

3(8x-2)=3(5x+6)

24x-6=15x+18

24x-15x=18+6

9x=24

x=24/9

x=2.6

2(3x-7)=4x-6

6x-14=4x-6

6x-4x=6+14

2x=20

x=20/2

x=10

4(x-2)=12-x

4x-8=12-x

4x+x=12+8

5x=20

x=20/5

x=10

Answer 2

Respuesta:

ECUACION  1

2(x + 8) = 40 - x

2(x + 8) = 2x + 16

2x + 16 = 40 - x

2x = -x + 24

3x = 24

24/3 = 8

$\boxed{x=8}$

ECUACION  2

3(2x - 5) = 45 + 4x

3(2x - 5) = 6x - 15

6x - 15 = 45 + 4x

6x = 4x + 60

2x = 60

60/2 = 30

$\boxed{x=30}$

ECUACION  3

3(8x - 2) = 4(5x + 6)

3(8x - 2) = 24x - 6

4(5x + 6) = 20x + 24

24x - 6 = 20x + 24

24x = 20x + 30

4x = 30

$\frac{30}{4}=\frac{15}{2}$

$\boxed{x=\frac{15}{2}}$

ECUACION  4

2(3x - 7) = 4x - 6

2(3x - 7) = 6x - 14

6x - 14 = 4x - 6

6x = 4x + 8

2x = 8

8/2 = 4

$\boxed{x=4}$

ECUACION  5

4(x - 2) = 12 - x

4(x - 2) = 4x - 8

4x - 8 = 12 - x

4x = -x + 20

5x = 20

20/5 = 4

$\boxed{x=4}$

Saludos...