Answer:
A and C
Step-by-step explanation:
Step 1: Replace x with 2.5 and see if it makes the equation correct.
A. |2 1/2 + x = 5| Since 2 and 1/2 is also written as 2.5, and 2.5+2.5=5, the solution makes this equation true.
B. |25x = 63| 25 x 2.5 equals 62.5, which does not make this equation true because 63 ≠ 62.5
C. |6.75x + 4.25x = 27.5| I Rewrite this equation as
(6.75 x 2.5) + (4.25 x 2.5) which can simplify to 16.875 + 10.625 and it does in fact equal 27.5, so this solution does make the equation true.
Step 2: Eliminate the equation(s) that aren't true, and then answer.
A and C are correct.
