Question

2 ° Resuelve
a) 5(x - 6) + 2(-3x - 7) = 2(3x + 5)
b) 4x + 5 - x = 10x + 7 - X
c) -2(2x + 4) - x(x + 3) = 5 - 3x​

Answer 1

Respuesta:

a) 5(x - 6) + 2(-3x - 7) = 2(3x + 5)

5x - 30 + (-6x ) - 14 = 6x + 10

5x - 30 - 6x -14 = 6x + 10

5x - 6x - 6x = 30 + 10 + 14

-7x = 54

-54 = 7x

x = - 7'714285714

b) 4x + 5 - x = 10x + 7 - x

5 - 7 = 10x- 4x - x + x

-2 = 6x

x = - 0'333...

c) -2(2x + 4) - x(x + 3) = 5 - 3x​

-4x - 8 - 2x - 3x = 5 - 3x

- 8 - 5 = 4x + 2x + 3x - 3x

- 13 = 6x

x = - 2'16666...

Espero haberte ayudado = )