The answer is C
Hope this helps
Answer:
4 1/2 m
7.0 - 2.5 = 4.5, 4.5 = 4 1/2 <3
Step-by-step explanation:
b
![\begin{align}7x-y-z-x-y+z&=(7x-x)+(-y-y)+(-z+z)]]\\&=6x-2y\\&=6\cdot(2)-2\cdot(-4)\\&=20\end{align}](https://tex.z-dn.net/?f=%5Cbegin%7Balign%7D7x-y-z-x-y%2Bz%26%3D%287x-x%29%2B%28-y-y%29%2B%28-z%2Bz%29%5D%5D%5C%5C%26%3D6x-2y%5C%5C%26%3D6%5Ccdot%282%29-2%5Ccdot%28-4%29%5C%5C%26%3D20%5Cend%7Balign%7D)
