Question 1187224
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I don't know how the other tutors came up with answers to the problem; the problem as stated is nonsense.<br>
"...two times the measure of an angle is 21 less than the measure of the angle..."<br>
Translation: 2x = x-21  -->  x = -21<br>
The measure of an angle (in geometry) can't be negative....<br>
Re-post, stating the conditions correctly.<br>
Note you might find it easier to post the problem correctly if you use some punctuation and sentence structure -- you know, things like periods at ends of sentences and capital letters at the beginning of new sentences.<br>