Question 1209165
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{{{x^2 - 11x - 42 = -2x + 10 + x^2 + 17x - 13}}}
Rather elementary.  The "x^2" terms on both sides cancel, leaving a linear equation which is solved using basic algebra.<br>
{{{-11x-42=-2x+10+17x-13}}}
{{{-11x-42=15x-3}}}
{{{-39=26x}}}
{{{x=-39/26=-3/2}}}<br>
ANSWER: x = -3/2<br>