Question 1108466
Let {{{ x }}} = my present age
{{{ x + 12 = 3*( x - 4 ) }}}
{{{ x + 12 = 3x - 12 }}}
{{{ 2x = 24 }}}
{{{ x = 12 }}}
I am 12 now
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check:
{{{ x + 12 = 3*( x - 4 ) }}}
{{{ 12 + 12 = 3*( 12 - 4 ) }}}
{{{ 24 = 3*8 }}}
{{{ 24 = 24 }}}
OK