Question

ΔABC is an equilateral triangle. m∠A = (3x - 12)°. Solve for x

Answer 1

3x-12=60°
3x-12+(12)=60+(12)
3x=72
3x÷(3)=60÷(3)
x=24

Answer 2

The answer is:  x = 24° .
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Explanation:  3(3x - 12) = 180 ; solve for "x" .
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9x - 36 = 180 ;

9x    = 216 ;

 x = 24
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