Question 1174579
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{{{(-2-3i)/(3+4i)}}} 

The general approach to simplifying these expressions is to multiply the fraction by another fraction (equivalant to 1) consisting of the complex-conjugate of the denominator over itself:
= {{{ ((-2-3i)/(3+4i)) * ((3-4i)/(3-4i)) }}}

from here, carry out the multiplications, the denominator will become a pure real.

= {{{ (-6+8i-9i -12) / (9+16) }}}
= {{{ (-18-i)/25 }}}