Question 1044294
Let the unknown number  = {{{ x }}}
{{{ 3x - 4 = -19 }}}
{{{ 3x = -19 + 4 }}}
{{{ 3x = -15 }}}
{{{ x = -5 }}}
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check answer:
{{{ 3x - 4 = -19 }}}
{{{ 3*(-5) - 4 = -19 }}}
{{{ -15 - 4 = -19 }}}
{{{ -19 = -19 }}}
OK