Question 1045504
Let {{{ x }}} = her weekly allowance
She spent {{{ x/2 }}}, so she has {{{ x/2 }}} left
Then she added {{{ 8 }}}, so I can say:
{{{ x/2 + 8 = 18 }}}
{{{ x/2 = 10 }}}
{{{ x = 20 }}}
Her weekly allowance is $20
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check answer:
{{{ x/2 + 8 = 18 }}}
{{{ 20/2 + 8 = 18 }}}
{{{ 10 + 8 = 18 }}}
{{{ 18 = 18 }}}
OK