Question 62866
I am assuming that the exponent is 3x, let me know if that isn't what you meant.
{{{2^(3x)=128}}}
{{{2^(3x)=2^7}}}
{{{3x=7}}}
{{{3x/3=7/3}}}
{{{highlight(x=7/3)}}}
Check:
{{{2^(3(7/3))=128}}}
{{{2^(21/3)=128}}}
{{{2^7=128}}}
{{{128=128}}} We're right!!!
Happy Calculating!!!!