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Phoenix [80]
3 years ago
9

G solve the​ equation, and check the solution. R plus 7 equals 9r+7=9 the solution set is startset nothing endset . ​(type an in

teger or a​ fraction.)
Mathematics
1 answer:
xenn [34]3 years ago
7 0
<h3>Given</h3>

... r + 7 = 9

<h3>Find</h3>

... r

<h3>Solution</h3>

Subtract 7 from both sides of the equation.

... r + 7 - 7 = 9 - 7

... r = 2 . . . . . . simplify

Expressed as a solution set, this may look like ...

... r ∈ {2}

_____

You probably had no trouble solving this in 2nd grade when it was shown to you in the form ...

__ + 7 = 9

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