Question

Olá Determinar X tal que: 2a-4x=b-(x-a)/2. Sendo a=(3,2,-4), b=(12,8,5)

Answer 1

Bom dia

2a - 4x = b - (x - a)/2

4a - 8x = 2b - x + a

8x - x = 4a - 2b - a

7x = 3a - 2b 

x = (3a - 2b)/7 

x = (3*(3, 2, -4) - 2*(12, 8, 5))
x = (9, 6, -12) - (24, 16 , 10)

x = (-15, -10, -22)