Question 1156700
Let Emily's age =  {{{ x }}}
Emma's age is {{{ x + 6 }}}
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Emily's age in 3 yrs = {{{ x + 3 }}}
Emma's age in 3 yrs = {{{ x + 6 + 3 }}}
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given:
{{{ x + 6 + 3 = 2*( x + 3 ) }}}
{{{ x + 9 = 2x + 6 }}}
{{{ x = 3 }}}
and
{{{ x + 6 = 9 }}}
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Emma is 9 now
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check:
{{{ x + 6 + 3 = 2*( x + 3 ) }}}
{{{ 9 + 3 = 2*( 3 + 3 ) }}}
{{{ 12 = 12 }}}
OK