Question 657386
She starts with {{{x}}}
Then {{{2x}}}
Next {{{ 2x - 30 }}}
Then {{{ 3*( 2x - 30 ) - 54 }}}
Then {{{ 4*( 3*( 2x - 30 ) - 54 ) -72 = 48 }}}
{{{ 12*(2x - 30) - 216 - 72 = 48 }}}
{{{ 24x - 360 - 216 - 72 = 48 }}}
{{{ 24x = 360 + 216 + 72 + 48 }}}
{{{ 24x = 696 }}}
{{{ x = 29 }}}
She started with 29 fish
check:
{{{ 29 }}}
then {{{ 58 }}}
then {{{ 58 - 30 = 28 }}}
then {{{ 3*28 - 54 = 30 }}}
then {{{ 4*30 - 72 = 48 }}}
{{{ 120 - 72 = 48 }}}
{{{ 48 = 48 }}}
OK