Question 710715
4·(7^x) = 5.5(e^ −3x) 
{{{4*7^x = 5.5e^(-3x)}}}
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{{{7^x = 1.375e^(-3x)}}}
{{{x*ln(7) = ln(1.375) + (-3x)}}}
{{{x*ln(7) = ln(1.375) - 3x}}}
{{{3x + x*ln(7) = ln(1.375)}}}
{{{x*(3 + ln(7)) = ln(1.375)}}}
{{{x = ln(1.375)/(3 + ln(7))}}}
x =~ 0.0643873