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Addition and Subtraction of Algebraic Expression

If A = 16x ...

Question

If $A = (16 x + 8) + 4$ and $B = (15 x - 10) + - 5$ then $A - B$ is ____.

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Solution

$A = (16 x + 8) + 4$
$B = (15 x - 10) + (- 5) A = 16 x + 12; B = 15 x - 15 A - B = 16 x + 12 - 15 x + 15 = x + 27$

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