HELP WITH THIS QUESTION PLEASE RIGHT HERE

Has anyone here taken the orela elementary education subtest 2 (103)? if so can you link me videos, practice tests, or methods on what you did to pass it?

The equation 24x2+25x−47ax−2=−8x−3−53ax−2 is true for all values of x≠2a, where a is a constant.what is the value of a? a) -16b) -3c) 3d) 16

Which phases do not always fill their containers? select all that apply a. solid b. liquid c. gas