Question 974524
{{{ x - x*(-4) = x + 9 }}}
{{{ x*( 1 -(-4) ) = x + 9 }}}
{{{ 5x = x + 9 }}}
{{{ 4x = 9 }}}
{{{ x = 9/4 }}}
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check:
{{{ 9/4 - (9/4)*(-4) = 9/4 + 9 }}}
{{{ 9/4 + 9 = 9/4 + 9 }}}
OK