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Butoxors [25]
2 years ago
7

2. Find the value of the expression 21 – 2a if a = 3.

Mathematics
2 answers:
timama [110]2 years ago
7 0

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

poizon [28]2 years ago
6 0

<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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