Question 764369
{{{ -3x - 5 = 13 }}}
Add {{{ 5 }}} to both sides
{{{ -3x - 5 + 5 = 13 + 5 }}}
{{{ -3x = 18 }}}
Divide both sides by {{{ -3 }}}
{{{ ( -3x ) / ( -3 ) = 18 / (-3) }}}
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Here you use the rules of division:
(-) / (-) = (+)
and
(+) / (-) = (-)
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{{{ x = -6 }}}