<PRE><B>Question 550108</B>
First solve {{{9x+18=16x}}}



{{{9x+18=16x}}} Start with the given equation.



{{{9x=16x-18}}} Subtract {{{18}}} from both sides.



{{{9x-16x=-18}}} Subtract {{{16x}}} from both sides.



{{{-7x=-18}}} Combine like terms on the left side.



{{{x=(-18)/(-7)}}} Divide both sides by {{{-7}}} to isolate {{{x}}}.



{{{x=18/7}}} Reduce.


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So because {{{bx=99}}}, we know that {{{b(18/7)=99}}}. Now solve for b to get



{{{18b = 99*7}}}



{{{18b = 693}}}



{{{b = 693/18}}}



{{{b = 77/2}}}</PRE>