Kristina, malachi, and susan are standing in line at target. susan is (2y) feet from the front of the line. malachi is (y+14) feet behind susan and kristina is (5y+6) feet farther from the front of the line than malachi. kristina is at the end of the line and malachi is in the exact middle of the line.
what justification can be used to state that km + ms + sf = kf?
a. substitution property of equality
b. segment addition postulate
c. distributive property
d. angle addition postulate