Apply the distributive property.

Multiply by .

Apply the distributive property.

Multiply by .

Multiply by .

Multiply by .

Subtract from .

Simplify the expression.

Move .

Reorder and .

Simplify -3(m+1)-7m(3m+3)

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# Simplify -3(m+1)-7m(3m+3)

Apply the distributive property.

Multiply by .

Apply the distributive property.

Multiply by .

Multiply by .

Multiply by .

Subtract from .

Simplify the expression.

Move .

Reorder and .

Simplify -3(m+1)-7m(3m+3)