SOLUTION: The measure of an angle is 10 less than 3 times the measure of its complement. Find the measure of both angles. I'm doing: x+y=90 x=3y-10 3y-10+y=90 4y-10=90 4y=80 y=20

Algebra ->  Points-lines-and-rays -> SOLUTION: The measure of an angle is 10 less than 3 times the measure of its complement. Find the measure of both angles. I'm doing: x+y=90 x=3y-10 3y-10+y=90 4y-10=90 4y=80 y=20       Log On


   



Question 231629: The measure of an angle is 10 less than 3 times the measure of its complement. Find the measure of both angles.
I'm doing:
x+y=90
x=3y-10
3y-10+y=90
4y-10=90
4y=80
y=20
x=3y-10
x=3(20)-10
x=60-10
x=50
It doesn't equal 90! Help!

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Absolutely on the right track. But you have got to watch your signs.









Perfect up to this point. But now you need to ADD 10 to both sides:









John