Question 679914
{{{ 20 - z/3 = z/2 }}}
Multiply both sides by {{{ 6 }}}
{{{ 120 - 2z = 3z }}}
{{{ 5z = 120 }}}
{{{ z = 24 }}}
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check answer:
{{{ 20 - z/3 = z/2 }}}
{{{ 20 - 24/3 = 24/2 }}}
{{{ 20 - 8 = 12 }}}
{{{ 12 = 12 }}}
OK