Question 832769
1. If 9 times a number is added to 18, the result is -27. Find the number.


Let j be the number.
{{{9j}}}, " 9 times a number"
{{{9j+18}}}, "is added to 18" ----- do not misunderstand the "is" in the phrase.
{{{expression=-27}}}, "result is -27", Now the equation is described;


Equation to solve is {{{highlight(9j+18=-27)}}}



2.  ...measure whose complement is...

Complement means the angle plus the other angle equals 90 degrees.
Let m be the measure of "an angle".
{{{90-m}}} is the complement of m.
{{{highlight(90-m=8*m)}}}; solve for m.