Question 1062639
<font color=black size=3>
{{{(-3)(a+x)}}}



{{{(-3)(8+x)}}} Replace every copy of 'a' with 8



{{{(-3)(8+(-10))}}} Replace every copy of 'x' with -10



Now use PEMDAS to evaluate



{{{(-3)(8+(-10))}}}



{{{(-3)(8-10)}}}



{{{(-3)(-2)}}}



{{{6}}}



So in the end, {{{(-3)(a+x)=6}}} when a = 8 and x = -10


The final answer is <font color=red size=4>6</font>
</font>