Question

ecuaciones
(2x + 5 ) : ( - 3) = 11
2 . ( 4x - 5) = 3 . ( x + 10 )
- 4 . ( 2 x - 3 ) - 5 = 31

Answer 1

Respuesta:

$\frac{2x+5}{-3} = 11$

2x +5 = 11 * -3

2x +5 = -33

2x = -33 - 5

2x = -38

x= -38/2

x= 19

2(4x - 5) = 3(x + 10)

8x - 10 = 3x + 30

8x - 3x = 30 + 10

5x = 40

x = 40/5

x=8

-4(2x - 3) - 5 = 31

-8x + 12 -5 = 31

-8x = 31 - 12 + 5

-8x = 24

x = 24/-8

x= -3