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Braxton Pratt
Mathematics
20 December, 04:15
What is a?
45 = 4 (a + 3) - 3
A: a = - 9
B: a = 12
C: a = 9
D: a = - 12
+1
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2
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Kallie Lowe
20 December, 04:25
0
45 = 4 (a+3) - 3
45+3 = 4 (a+3)
48 = 4 (a+3)
48/4 = a+3
12 = a+3
a = 9
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Giselle Barnett
20 December, 04:40
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First, you need to distribute 4 throughout the parenthesis.
You get 45 = 4a + 12 - 3
Put 12 and 3 together.
45 = 4a + 9
Subtract 9 from both sides.
36 = 4a
Divide each side by 4 and you have your answer.
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» What is a? 45 = 4 (a + 3) - 3 A: a = - 9 B: a = 12 C: a = 9 D: a = - 12
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