Question

sum of 7x and -9x is​

Answer 1

Answer:

-2x

Step-by-step explanation:

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Answer 2

$7x + ( - 9x) \: \: \: \: \: \: \: \: \: \: \: \: ( + - = - ) \\ 7x - 9x \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ = \: - 2x \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

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