Simplify (-7-3m^3-7m)-(-7m^3-3)

$(- 7 - 3 m^{3} - 7 m) - (- 7 m^{3} - 3)$

Step 1

Simplify each term.

Apply the distributive property.

$- 7 - 3 m^{3} - 7 m - (- 7 m^{3}) - - 3$

Multiply $- 7$ by $- 1$ .

$- 7 - 3 m^{3} - 7 m + 7 m^{3} - - 3$

Multiply $- 1$ by $- 3$ .

$- 7 - 3 m^{3} - 7 m + 7 m^{3} + 3$

$- 7 - 3 m^{3} - 7 m + 7 m^{3} + 3$

Step 2

Simplify by adding terms.

Add $- 7$ and $3$ .

$- 3 m^{3} - 7 m + 7 m^{3} - 4$

Add $- 3 m^{3}$ and $7 m^{3}$ .

$4 m^{3} - 7 m - 4$

$4 m^{3} - 7 m - 4$

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