let a 3i+j-k and c 2i-3j+3k
let a i-2j+3k b i+j+k
let v 2i+j-k and w i+3k
let a 3i+2j+xk and b i-j+k
let a 3i+j and b i+2j+k
let a i+j+2k b 2i-3j+k
let a i+j-k and c 2i-3j
let a i+2j+3k b i-j+2k
let a i+j-k and c 2i-3j+2k
let a 2i+3j-k and b i-2j+3k
let a i+j+k and b j-k
let a 5i-j-3k and b i+3j+5k
let a 2i+j-k and b i+2j+k