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Korolek [52]
3 years ago
12

Combine like terms to create an equivalent expression: 4z-(-3z)

Mathematics
2 answers:
nordsb [41]3 years ago
3 0
The answer is:  " 7z " .
____________________________________________________

<u>Note</u>:  " 4z - (-3z)  = ? " ; 

Note that "subtracting a negative" is the same thing as "adding a positive" ;

→  " 4z - (-3z)  = 4z + 3z = 7z .
____________________________________________________
The answer is:  " 7z " .
____________________________________________________
charle [14.2K]3 years ago
3 0

7z. 2 negs make a pos. But two wrongs do not make a right.

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Here, we want to get what Andre's mistake was and correct it

To answer this, we are supposed to use the division law of indices

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Now, in the case of this question, x is 4 and y is -3

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His mistake is thus adding the exponents instead of subtracting

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1 year ago
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4 years ago
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