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This weeks algebra question ....
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tedbear
Posted 12/10/2018 15:18 (#7162130 - in reply to #7162022)
Subject: RE: This weeks algebra question ....


Near Intersection of I-35 & I-90 Southern Mn.
NHpower - 12/10/2018 13:50

no single digit x 2 will carry a 2.
i.e. 9+9=18, carry the 1.


Agree - Carry would be 0 or 1.

Looking at the rightmost E's: H = E + E or H= 2E (No carry involved)

Looking at the leftmost E's: A= 2E but there may have been a carry in so then A = 2E + 1

Substituting H=2E into the first yields A=H which is not allowed therefore the other choice must be correct

so by substitution A= 2E +1 becomes A= H + 1.

Finally sinks in.




Edited by tedbear 12/10/2018 15:37
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