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Mathematics 9 Online
OpenStudy (anonymous):

solve;16^3x-9=8^x+6

OpenStudy (anonymous):

if this is what you meant 16^(3 x-9) = 8^(x+6) then x=6

OpenStudy (anonymous):

ooooooooooooooooooh

OpenStudy (anonymous):

trick is to write \[16=2^4\] \[8=2^3\] so you have the bases the same

OpenStudy (anonymous):

then you get \[2^{4\times (3x-9)}=2^{3\times (x+6)}\]

OpenStudy (anonymous):

and so \[4(3x-9)=3(x+6)\] solve for x and you get carrib answer

OpenStudy (anonymous):

how you get 2^4

OpenStudy (anonymous):

2*2*2*2 = 2^4

OpenStudy (anonymous):

=16

OpenStudy (anonymous):

o ok i see that now

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