Question 937982
(a) 
{{{ 2m + 5*( m + 2 ) }}}
{{{ 2m + 5m + 10 }}}
{{{ 7m + 10 }}} yards of cloth altogether
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(b)
{{{ m = 7 }}}
{{{ 5*( m + 2 ) - 2m }}}
{{{ 5*( 7 + 2 ) - 2*7 }}}
{{{ 5*9 - 2*7 }}}
{{{ 45 - 14 }}}
{{{ 31 }}} yards more cloth to sew dresses than shirts