Solve for r: -5 = 7 + 3r

asked Oct 28, 2015 218k views

4 votes

Solve for r:

-5 = 7 + 3r

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5 votes

$-5=7+3r\ \ \ \ \ \ |combine\ like\ terms\\\\-5-7=3r\\\\-12=3r\ \ \ \ \ \ \ |:3\\\\r=-4$

Idish answered Oct 30, 2015

by Idish

8.2k points

6 votes

So,

-5 = 7 + 3r
(subtract 7 from both sides)
-12 = 3r
(divide both sides by 3)
-4 = r

Onusopus answered Nov 3, 2015

9.2k points

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