Opposite angles of an inscribed quadrilateral are supplementary, so it is true that ...
... B. m∠A + m∠C = m∠B + m∠D . . . . . = 180°
So for A Write all numerators above the least common denominator Add the numbers
7
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12
Seperate the questions 12+15=25 ÷ by 3×6= 18-4= the answer