6.5
No whole numbers multiply to equal 13 but 2 x 6.5 can equals 13 * * * * * Not quite true: 1 x 13 = 13
11
v equals m divided by p
5 it is 5 because 13 + 7 = 20 20 divided by 4 is 5 to find out the answer, work through the equation backwards and use the opposite operations.
120 divided by 20 equals 6
1 divided by 13 equals 13
78 divided by 6 equals 13.
13
13
21
13
13
Negative 17 plus 121 divided by 8 equals 13.
16.4
274
13 + 130 = 143
2.1667