To subtract 7 from 102, you have to regroup. You subtract 2 from 100, and 2 from 7, so it is 100-5. 100-5 is 95. The answer is 95. If you don't understand, tell me in the comments. This is just one method of subtracting.
(a+b+c)/2. this is your answer. if it had the numbers i would solve it fully, but it only has variables.
You'd times15x25 and you'll gladly get the answer
maybe 28 is the answer...
Answer:
=3/7 × -2/5
=-6 / 35
Step-by-step explanation: