Question

step by step explanation please ​

Answer 1

$\vec A+\vec B=(3\hat i+2\hat j+3\hat k)+(4\hat i+8\hat j-2\hat k)\\\\\vec A+\vec B=3\hat i+2\hat j+3\hat k+4\hat i+8\hat j-2\hat k\\\\\vec A+\vec B=(3+4)\hat i+(2+8)\hat j+(3-2)\hat k\\\\\underline {\underline {\vec A+\vec B=7\hat i+10\hat j+\hat k}}$