SOLUTION: Two complementary angles are 3r-4 degrees And r+30 degrees.Find the value of r.

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Question 1196429: Two complementary angles are 3r-4 degrees And r+30 degrees.Find the value of r.
Answer by math_tutor2020(3817) About Me  (Show Source):
You can put this solution on YOUR website!

Complementary angles form a 90 degree corner. I've highlighted the "co" to help remember the connection.

(3r-4)+(r+30) = 90
(3r+r)+(-4+30) = 90
4r+26 = 90
4r = 90-26
4r = 64
r = 64/4
r = 16