The center is M.
Your answer is B.
2/3y-4=x
2/3y*3/2=(x+4)*3/2
y=1.5x+6
Hello,
The 3th angle of the triangle is the supplement of 3x-8:
180-(3x-8)=180-3x+8=188-3x
The sum of all angles of the triangle is 180
180=2x+21+188-3x
==>180=-x+21+188
==>x=21+188-180
==>x=21+8
==>x=29