The answer is 72°
18 x 2 = 36°
180 - 36 = 144°
144 / 2 = 72°
Answer:
<em>
x−y
=
9
, x
+
y
=
6</em>
<em>x
+
y
=
4 , x
−
y
=
2</em>
<em>x
+
2
y
=
4 , x
−
y
=
−
3 </em>
<em>try out these examples?</em>
<em />
<em />
7 dosent go into 4 at all but 4 goes into 7 once