Answer:
-1.2 or -11/9 or -1 2/9
Step-by-step explanation:
The answer should have been 8.6 that was wrong but it is okay you were close
Sometimes it will, and sometimes it won't.
I reason as follows:
(21 + x) + (30 + 2x) = 51 + 3x has an 'x' term
(42 + x) + (30 - x) = 72 has no 'x' term.
Answer is C. 168 fluid ounces