What? Need answers. Plus, I can tell that your are doing this in class. Bad idea.
Answer:
x=9
Step-by-step explanation:
I hope this helps you
16x+4=110+3x+11
13x=117
x=9
i < 3u
Step-by-step explanation:
6i < 5i + 3u
6i - 5i < 3u
i < 3u

now, there are 1000 grams in one Kilogram, so in 1680 grams, there are 1680/1000 Kilograms, namely 1.680.