bellamore
bellamore
03-07-2018
Mathematics
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Solve for r:2r+7=13
Please help?
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Creati
Creati
03-07-2018
Hiya!
Switch the equation around:
2r + 7 = 13 ⇒ 13 - 7 = 2r
The sign changes when moved to the other side( + to -)
13 - 7 = 6
[tex] \frac{6}{2} = \frac{2r}{2} [/tex]
r = 2
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