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How do you simplify $12 x^{3} + - 18 x^{3}$ $12x^3 + -18x^3$ ?

1 Answer

Sep 30, 2015

$- 6 x^{3}$ $-6x^3$

Explanation:

Simplify $12 x^{3} + - 18 x^{3}$ $12x^3+ - 18x^3$
as $12 x^{3} - 18 x^{3}$ $12x^3-18x^3$

For any value of $elephants$ $" elephants"$
$XXX 12 elephants - 18 elephants = - 6 elephants$ $color(white)("XXX")12" elephants" - 18" elephants" = -6" elephants"$

Assigning the value of $x^{3}$ $x^3$ to $elephants$ $" elephants"$
we have
$XXX 12 x^{3} - 18 x^{3} = - 6 x^{3}$ $color(white)("XXX")12x^3 - 18x^3 = -6x^3$

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