The answer is c because all you are doing here is subbing the variable r for 5b.
Answer:
the first one is 1 the second is 4
Step-by-step explanation:
these could be negatives
Answer:
line 2
Step-by-step explanation:
on line 2 the two minuses at the end turn into a + (where the -2 is there should be a +2) because - x - = +
