Question 1133333

Angles X and Y are supplementary angles. Angle X is 3 times the measure of angle Y. What is the measure of angle X?
<pre>As one angle is X, the other (Y) is: 180 - X
We then get: X = 3(180 - X)  
X = 540 - 3X
X + 3X = 540
{{{highlight_green(matrix(1,5, X, "=", 540/4, "=", 135^o))}}}
That's ALL!!