According to the transitive property of equality, if tx = xy and xy = yz, then tx = .
tx
xy
yz
tz according to the transitive property of equality, if tx = xy and xy = yz, then tx = .
tx
xy
yz
tz

Let's say TX = 7. TX is equal to XY, so this means TX = XY = 7. So we know XY equals 7, and it's given that XY = YZ. Substitute in 7 for XY and you get 7 = YZ. Since Both TX and YZ are equal to 7, they are equal.