2. Find the value of the expression 21 – 2a if a = 3.
2 answers:
Answer:
A
Step-by-step explanation:
we just substitute the value of "a" given in the above expression we get
21-2(3)
21-6=15
<u>Answer:</u>
<em><u>a. 15</u></em>
<u />
<u>Explanation:</u>
<u />
Step 1 - Input the value of 'a' in the expression.
21 - 2a
21 - 2(3)
Step 2 - Multiply two and three
21 - 2(3)
21 - 6
Step 3 - Subtract six from twenty one
21 - 6
15
Therefore, the value of the expression 21 - 2a if a = 3 is <u><em>a. 15.</em></u>
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