To solve the question we proceed as follows:
In an inscribed quadrilateral, the opposite angles are supplement for each other. In our case A and C are supplements. B and D are supplements. Hence to solve for A we need to obtain the value of x.
since B and D are supplements, then:
B+D=180
plugging the values:
2x+(3x-5)=180
2x+3x-5=180
5x=180+5
5x=185
x=37
hence:
A=x+5
A=37+5
A=42°
