Answer:
Integers are not closed under the DIVISION operation
Example:
(9 ÷ 2 = 4½)
It could be a building with a triangular top. If the building had a triangular top, then it must have 3 rectangles as its sides. So your answer would be, a building with a triangular top.
Okay
5.
m+4=17
-4 -4
m=13
6.
12=24-y
24-12
y=12
7.
15-b=12
-12 -12
b=3
8.
10t=90
90/10
t=9
9.
22/y=2
22/2
y=11
10.
54=6b
54/6
b=9
It's kind of like division and mutliplycation I guess