The top two (4/3 x 12/3) and (32/4 x 15/4) have rational solutions.
The bottom two have square roots of non-square numbers, which produces irrational numbers.
Answer and work down below
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Answer:
a = -8
Step-by-step explanation:
-5/2 a + 5 = 25
Subtract 5 from each side
-5/2 a + 5-5 = 25-5
-5/2 a = 20
Multiply each side by -2/5
-2/5 *-5/2 a = 20*-2/5
a = -8