Let <em>x</em> = 8.132132132... .
Then 1000<em>x</em> = 8132.132132132... .
Subtracting <em>x</em> from 1000<em>x</em> eliminates the fractional part, leaving you
999<em>x</em> = 8132 - 8 = 8124
Then
<em>x</em> = 8124/999 = 2708/333
Answer:
8+8=16
This the answer because 16 is greater that 7+7, but less than 8+9 and 8+8 is a doubles fact. So the answer makes sense.
There may be more than one correct answer here.
Note that 48 cubic units is equivalent to (6 units)(8 units)(1 unit). Can you think of any other 3 dimensions whose product is 48 cubic units?
Switch the equation around and it gives you D+B/A=C. Then subtract D from both sides, which gives you B/A=C-D. Then you multiply by A which gives you B= CA - DA