Answer:
= 
Step-by-step explanation:
Given

Required
Simplify

Rewrite as


Open the bracket

Answer:
16/18
8/9
Step-by-step explanation:
the answer is B) -8/9
Answer:
50
Step-by-step explanation:
<span>One pair of metric unit of length would be meters and kilometers. 1 km is equal to 1000 meters. Metric system is the official/standard in measuring length, mass, area, volume, speed, etc. and it is the agreed system of measurement.</span>