Question

Porfa ayuda con estas ecuaciones .!!!!!!!!!


a)5x+6-4x=3x-12

b)5(3x+2)=8(9-2x)

c)2(3x-7)+6=4x-3(2-2x)​

Answer 1

SOLUCIÓN:

5x + 6 - 4x = 3x -12

5x + 4x + 3x = 12 - 6

12x = 6

x = 12 / 6

x = 2

5 ( 3x + 2 ) = 8 ( 9 - 2x )

15x + 10 = 72 - 16x

15x + 16x = 72 - 10

31x = 62

x = 62 / 31

x=2

2 ( 3x - 7 ) + 6 = 4x - 3 ( 2 - 2x )​

6x - 14 + 6 = 4x - 6 + 6x

6x - 6x - 4x = -6 - 6 + 14

-4x = 2

x = 2/-4

x = -1/2

espero te ayude

Answer 2

Respuesta:

a) $5x + 6 - 4x = 3x - 12 \\ x + 6 = 3x - 12 \\ x - 3x = - 12 - 6 \\ - 2x = - 18 \\ x = 9$

b) $5(3x + 2) = 8(9 - 2x) \\ 15x + 10 = 72 - 16x \\ 15x + 16x = 72 - 10 \\ 31x = 62 \\ x = \frac{62}{31} \\ x = 2$

c) $2(3x - 7) + 6 = 4x - 3(2 - 2x) \\ 6x - 14 + 6 = 4x - 6 - 6x \\ - 14 + 6 = 4x - 6 \\ - 8 = 4x - 6 \\ - 4x = - 6 + 8 \\ - 4x = 2 \\ x = \frac{2}{ - 4} \\ x = - \frac{1}{2} \\ x = - 0.5$