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23 Jan 2010, 08:09
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I've been trying to unravel the Kaplan answer provided without success. Hope someone can guide me to how they arrive at it!
mn - 3 = 3-n
n+mn - 3 = 3 - n + n Got it!
mn + n - 3 = 3 Got it!
mn + n = 6 Got it!
n(m+1) = 6 huh?!
Question is how did it get from mn + n to n(m+1)? I've lost the train of logic
Thanks
Swash
mn - 3 = 3-n
n+mn - 3 = 3 - n + n Got it!
mn + n - 3 = 3 Got it!
mn + n = 6 Got it!
n(m+1) = 6 huh?!
Question is how did it get from mn + n to n(m+1)? I've lost the train of logic
Thanks
Swash
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23 Jan 2010, 08:28
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doh! So dumb
Plugged in some numbers to test it out and worked it out!
Plugged in some numbers to test it out and worked it out!
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26 Jan 2010, 10:14
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swashbuckler :: Please go through the basics of mathematics, commulative ,associative properties.
mn+ n
take n common.. u will get n(m + 1)
If you break the bracket you will get n(m+1) = n(m) + n(1) = nm +1
mn+ n
take n common.. u will get n(m + 1)
If you break the bracket you will get n(m+1) = n(m) + n(1) = nm +1
