If a + 7b + 4c = 2. what is 36c + 9a + 63b?

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If a + 7b + 4c = 2. what is 36c + 9a + 63b?

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Answer 1 · 2016-11-24T08:13:24

I got $18$ $18$

Explanation:

$36 c + 9 a + 63 b =$ $36c+9a+63b=$ collecting $9$ $9$ :
$= 9 \cdot (4 c + a + 7 b)$ $=9*(4c+a+7b)$
so it is $4$ $4$ times the given $a + 7 b + 4 c$ $a+7b+4c$ which in the definition is equal to $2$ $2$ ; so:
$= 9 \cdot (4 c + a + 7 b) = 9 \cdot 2 = 18$ $=9*(4c+a+7b)=9*2=18$

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If a + 7b + 4c = 2. what is 36c + 9a + 63b?

1 Answer

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