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OpenStudy (anonymous):
how do i solve for x? 3^3x-5 = 81
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Parth (parthkohli):
Okay, what is 81 in terms of 3?
OpenStudy (anonymous):
x=3
OpenStudy (anonymous):
how do you get that
OpenStudy (anonymous):
as parth told 3x-5=4
OpenStudy (anonymous):
as 3^4=81
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jhonyy9 (jhonyy9):
you need writing 81 with 3 on what exponent ?
jhonyy9 (jhonyy9):
so than on the left part there is 3 on exponent 3x-5 and wfter this you need just make the exponent from left part equal with exponent of 3 from right part and solve this equation for x
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