HELP ME PLEASE Which expression is equivalent to
3
4
-
1
2
?
A)
3
4
+
1
2
B)
3
4
+ (-
1
2
)
C)
3
4
- (-
1
2
)
D)-
3
4
+ (-
1
2
)

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

(! ) three cylinders have a height of 8 cm. cylinder 1 has a radius of 1 cm. cylinder 2 has a radius of 2 cm. cylinder 3 has a radius of 3 cm. find the volume of each cylinder

How is this equation completed? i cannot find any examples in the book.