The rational number -21/ 28 in standard form is __________.
-3/ 4
3/4
3/7
-3/7
Divide: 5/9 ÷ (25/6)
5/3
4/5
2/15
3/8
8/10
8/24
5/8
5/24
Subtract: 7/9 - 2/5
27/32
17/45
13/30
14/41
In two rational numbers if
None of these
2/9 ÷ 4/7
2/36
3/40
7/18
Divide: 25/16 ÷ (8/5)
125/128
17/65
12/25
25/49
3/5 + 3/8 = _____.
1/40
11/40
9/40
39/40
7/8 + 1/2 = ____.
3/2
2/3
11/8
8/11
-6/ 5 ÷ 1 = _______
6/5
5/6
-6 / 5
-5 / 6
