Free points everyone and free mark who wants some for the mark first come first serve ok

Measure a and b and find their sum. how are the angles related?

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.

Use the distributive property -7(-2x+u-2)