Question 768492
{{{ 6 = b/9 }}}
Whatever you do to one side, you 
have to do to the other side
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Multiply both sides by {{{ 9 }}}
{{{ 9*6 = 9*( b/9 ) }}}
{{{ 54 = b }}}
That's the answer
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Plug it back into the equation to check:
{{{ 6 = 54/9 }}}
{{{ 6 = 6 }}}
OK