Question

a )2 x -[ 3 x - (9 x + 1)- 8 ] = 12 x -{ 9 - [3 x -(5 - 2 x )- 10 ]+ 18 x}

Answer 1

Respuesta:

x = -1

Explicación paso a paso:

2x - [ 3x + 72x + 8] = 12x - { 9 -[3x + 50 - 20x] + 18x}

2x - 3x - 72x - 8 = 12x - {9 - 3x - 50 + 20x + 18x}

-73x - 8 = 12x - {-42 + 35x}

-73x - 8 = 12x + 42 - 35x

-73x -8 = 42 - 23x

-50 = 50x

x =  -1