15x, because 2 × 4x= 8x and -1×-7=7x...add 8x and 7x ull get the answer
<span>Let the smaller angle be x
The larger angle will be 3x+8
X+3x+8=180
4x=180-8=172
X=172/4
X=43
3*43+8= 137</span>
Answer:
<h2>
20°</h2>
solution,
Angles in a straight line ( linear pair)= 180°
180°-110°=70°
Now,
Sum of angle in triangle= 180°

Hope this helps...
Good luck on your assignment...
21 - (3 x 4)
3 x 4 is 12, so it becomes 21 - 12.
21 - 12 = 9