Answer:
Step-by-step explanation:
Cross multiplication can be used but not in the beginning. First x should be isolated.

Now subtract
from both sides

In this stage, cross multiplication can be used.

Answer:
15 liters
Step-by-step explanation:
This will be half of the fraction 3/7
3/7 * 1/2 = 3/14
Hello, I Am BrotherEye
Answer: 672 Dollars
Step-by-step explanation:
It Is Simple 1/5 Of 840 Is = 168
168 - 840=672
Thus The Money Owed is
672 Dollars
Best Of Luck
~
BrotherEye