∠A and \angle B∠B are supplementary angles. If m\angle A=(x+6)^{\circ}∠A=(x+6) ∘
and m\angle B=(7x+30)^{\circ}∠B=(7x+30)
∘
, then find the measure of \angle A∠A.

answer:  

\boxed {\frac{1}{5}}  

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solution-

60 *   \frac{1}{5}   = 12

90 * \frac{1}{5} = 18

75 * \frac{1}{5} = 15

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hence, the answer would be \boxed {\frac{1}{5}}