3 years ago

I have been having trouble with this one for a while please help

Mathematics

1 answer:

Gelneren [198K]3 years ago

8 0

The answer is A.

A is correct because...

(7z+23)-(15z+9) There's an invisible positive 1 in front of (7z+23). Distribute.

7z+23-(15z+9) Distribute the negative sign among 15z and 9.

7z+23-15z-9 Now, combine the like terms, 7z, and -15z. 7z - 15z

-8z+23-9 Combine the like terms, 23 and -9. 23 - 9

-8z +14

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