LindaLine LindaLine

23-10-2016
Mathematics

contestada

0.3(r+2)=-0.1(-2r-4)

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seizetheday seizetheday

23-10-2016

I would first multiply both sides by 10 to get rid of the decimals:

3(r+2) = -(-2r-4)

We can then expand the brackets:

3r+6 = 2r+4

And simplify:

r+6 = 4
r = -2

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