We need to work with the same units, so first, we convert 1 km to cm.
1 km = 1000 m
1 m = 100 cm
1 km = 100,000 cm
Now we divide 100,000 cm by 5 cm.

Answer: It will take 20,000 years.
Answer:
Move all terms that don't contain x to the right side and solve.
x=−1 − 4y/3
Move all terms that don't contain x to the right side and solve.
x=6/5 − 3y/5
<h3>
Answer: 1/6</h3>
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Explanation:
Let's say for example this pizza had 6 slices to start with. Two-thirds of this is (2/3)*12 = 4 slices. So you have 4 slices left over from yesterday. Then let's say you hand one slice to each of your four friends. Each friend would have 1/6 of the original pizza.