Answer:
1) a, the first printer
2) b, the second printer
Step-by-step explanation:
Conveniently, your number line has 8 divisions in each unit interval, so finding 5/8 is a matter of counting 5 divisions.
The additive inverse of a number has the opposite sign from the number, so m = -5/8. The sum of a number and its additive inverse is zero. (That is the definition of additive inverse.)
2/3 + 1/4 = 11/12
11/12 divided by 4
0.229166667
So each sister gets <span><span>0.229 </span>of</span> the remaining brownies.