camdenslife46
camdenslife46
26-09-2017
Mathematics
contestada
solve for x. 3x-r=r(-3+x)
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Аноним
Аноним
27-09-2017
3x-r=r (-3+x)
3x-r=-3r+xr
3x-r+r=-3r+xr+r
3x=-2r+xr
3x-xr=-2r+xr-xr
3x-xr=-2r
x (3-r)=-2r
x (3-r)/(3-r)=-2r/(3-r)
x=-2r/(3-r)
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