Simplify (-3m^2-2m-1)-(3m^2+2m+2)

$(- 3 m^{2} - 2 m - 1) - (3 m^{2} + 2 m + 2)$

Simplify each term.

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Apply the distributive property.

$- 3 m^{2} - 2 m - 1 - (3 m^{2}) - (2 m) - 1 \cdot 2$

Simplify.

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Multiply $3$ by $- 1$ .

$- 3 m^{2} - 2 m - 1 - 3 m^{2} - (2 m) - 1 \cdot 2$

Multiply $2$ by $- 1$ .

$- 3 m^{2} - 2 m - 1 - 3 m^{2} - 2 m - 1 \cdot 2$

Multiply $- 1$ by $2$ .

$- 3 m^{2} - 2 m - 1 - 3 m^{2} - 2 m - 2$

Simplify by adding terms.

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Subtract $3 m^{2}$ from $- 3 m^{2}$ .

$- 6 m^{2} - 2 m - 1 - 2 m - 2$

Subtract $2 m$ from $- 2 m$ .

$- 6 m^{2} - 4 m - 1 - 2$

Subtract $2$ from $- 1$ .

$- 6 m^{2} - 4 m - 3$

Simplify (-3m^2-2m-1)-(3m^2+2m+2)