Pre-Algebra Examples

$7 a^{3} + 14 a + 12$ and $- 6 a^{3} + 12 a^{2} - 7$

Step 1

Add the expressions.

$7 a^{3} + 14 a + 12 - 6 a^{3} + 12 a^{2} - 7$

Step 2

Subtract $6 a^{3}$ from $7 a^{3}$ .

$a^{3} + 14 a + 12 + 12 a^{2} - 7$

Step 3

Simplify the expression.

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Step 3.1

Subtract $7$ from $12$ .

$a^{3} + 14 a + 12 a^{2} + 5$

Step 3.2

Move $14 a$ .

$a^{3} + 12 a^{2} + 14 a + 5$