-21
First, you have to be clear on what "answer" means. The 'answer' is the number
that 'f' must be, otherwise the statement isn't true.
For example, 'f' can't be '1'. If 'f' is '1', then -28 = -7, and that's not true.
There's only one number that 'f' can be. Here's how to find it:
-28 = -7 f
Divide each side of the equation by -7 :
4 = f
c7
28
What the question is really asking is: 4 x ? = 28 To find '?', you divide 28 by 4. 28 / 4 = 7 ? = 7 4 groups of 7 equal 28.
It Equals 28. If You Do 7x4 It Will Say 28.
7x4 equals 28.
16 = 7f + 2 14 = 7f 2 = f
f = -2
No, it equals -7f.
f = -6
36
28 divided by 5 which equals 5.6
c7
7
7
There is no prime number equal to 28. I know you must find this disappointing.
First find 1% by dividing by 100. So: 600/100 = 6 Now multiply by 28 to find 28% 6 x 28 = 168
28