Remove parentheses.

Simplify each term.

Apply the distributive property.

Multiply by .

Multiply by .

Add and .

Add and .

Apply the distributive property.

Multiply by .

Multiply by .

Subtract from .

Combine -10b-(-3b+(12b-(-13b+4)))

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# Combine -10b-(-3b+(12b-(-13b+4)))

Remove parentheses.

Simplify each term.

Apply the distributive property.

Multiply by .

Multiply by .

Add and .

Add and .

Apply the distributive property.

Multiply by .

Multiply by .

Subtract from .

Combine -10b-(-3b+(12b-(-13b+4)))