SOLUTION: in triangleABC ,AB=AC , ANGLE A=5X+20' & ANGLE B =2/5TH OF ANGLE A .FIND THE MEASURE OF ANGLE A

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Question 894480: in triangleABC ,AB=AC , ANGLE A=5X+20' & ANGLE B =2/5TH OF ANGLE A .FIND THE MEASURE OF ANGLE A
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Since AB=AC, then B=C,
A%2BB%2BC=180
A%2B%282%2F5%29A%2B%282%2F5%29A=180
A%289%2F5%29=180
A=180%285%2F9%29
A=100 degrees