Solve the system of equations.

3x+3y+6z=3
3x+2y+6z=7
4x+4y+7z=4

A. (x=5, y=-4, z=0)
B. (x=4, y=-3, z=1)
C. (x=6, y=-5, z=-1)
D. (x=7, y=-6, z=2)

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?

Plz : denver is about 5,200 feet above sea level. which number line best represents this integer?

What is the answer to this problem? ignore the work. what is the correct answer?