Respuesta :

763396

Answer:

-10h+8

Step-by-step explanation:

First, let's open the brackets:

-6h-13+21-4h (two -'s make a +)

This is equal to -10h + 8
-10h+8 because yu have to add -13 to 21 which is 8 and combine like terms which are -6h and -4h which equal -10h+8

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