SOLUTION: Please help me solve: If and angle is 28 degrees less than three times it's supplement, how large is the angle? 180-28=3(180-28) 180-28=3(152) 180-28=456 180=454 ?=? I'M LOS

Question 451584: Please help me solve: If and angle is 28 degrees less than three times it's supplement, how large is the angle?
180-28=3(180-28)
180-28=3(152)
180-28=456
180=454
?=?
I'M LOST
Answer by Gogonati(855) (Show Source): You can put this solution on YOUR website!
Let's be the unknown angel x degree, then its supplement will be (180-x) degree
write as you read the equation: x=3(180-x)-28, solving this equation, we get:
x+3x=540-28 => 4x=512 => x=128.
Answer:The unknown angle is 128 degree.
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