Step-by-step explanation:
2x + 3 y = 6 by 2
4x - 6y = 3
____________
4x+ 6 y = 12
4x - 6 y = 3
_____________
12 y = 9
y= 12/ 9 = 4 / 3
2X+ 3( 4 / 3 ) = 6
X = I
Points A, B, and C lie on a line.
Point A is between points B and C.
Starting at point A and going past point B, you have ray AB.
Starting at point A and going past point C, you have ray AC.
If you think of angle BAC, it is a straight angle of 180 degrees.
You have the two rays AB and AC forming a line and an angle.
You could set up a equation for each. Once you have the general equation for both, you can set them equal to each other and solve for x. That is one way to solve it. Example for the Company A is 5x + 8 = y
The answer to your question is a=124 because the center triangle is a isosceles triangle