Answer :

Yang100

Answer:

-b-12

Step-by-step explanation:

4b+7-5b-19

4b-5b+7-19

-b+7-19

-b-12

Answer:

-b-12

Step-by-step explanation:

The like terms is 4b and -5b since they both have b so you have to combine like terms. The coefficients are 4 and 5. Then you combine the rest of the like terms which are 7 and -19 and get 12. So once simplify you get the expression -b-12

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