Question

determina el valor de x de ecuaciones 6x + 12 + 4x - 1 = -x - 7x + 12 - 3x + 5 ; 2x -(x + 5) = 6 + (x + 1) ;

Answer 1

6x + 12 + 4x - 1 = -x - 7x + 12 - 3x + 5  
10x + 11 = -11x + 17
21x = 6
x = 6/21
x = 2/7

2x -(x + 5) = 6 + (x + 1)
2x - x - 5 = 6 + x + 1
-5 = 7 (Falso)

Buen dia!!