Question

determinar o vetor x tal que 3x= u+2v, sendo u= (2, -3, -13) e v=(2,-3,5)

Answer 1

3x = (1,-3,-13) + 2.(2,-3,5)
3x = (1,-3,-13) + (4,-6,10)
3x = (5,-9,-3)
x = (5/3,-3,-1)