Quote:
Originally Posted by Darrell
So, if the equation is 2x X 4 = 100, will I always take the 100 and divide it by the number that was originally multiplied to get 100? In this case 4.
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Yes, basically. You want to solve for the 'x', so you want to isolate it on one side of the equation and do appropriate add/subtract/multiply/divide until it is my itself.
Here is a slightly more complex example.
2x X 4 + 5 = 85
We want to simplify and getting rid of the "+ 5" on the left means that we subtract 5 from both the right and let sides of the "=" sign.
2x X 4 + 5 - 5 = 85 - 5
2x X 4 = 80
Now, just to simplify more straightforward, note that 2x really means "2 times x" so we can rewrite this as
2 X x X 4 = 80
Let's multiply the 2 and the 4 so we get 8
8 X x = 80
Now divide both sides by 8
x = 10.