Complete the description of how to find the sums −5 + 4 and −5 + (−4) on a number line. to find −5 + 4, start at 0. draw the arrow for −5. then, from _, draw the arrow for 4; the sum is _ . to find −5 + (−4), start at 0. draw the arrow for −5. then, from _ , draw the arrow for −4; the sum is _