Addition & Subtraction Method

[nycmathguy]

David Cohen

 

[MathLover1]

.......eq.1

.........eq.2
----------------------------------------------------------------
start with

........isolate x

...........divide by sqrt(6)

..........simplify

...........eq.1a


go to

........eq.2, isolate x

............ .....divide by sqrt(2)

.........eq.2a

from eq.1a and eq.2a we have

.......multiply by 2

....isolate y

......simplify

to be continued

 

[MathLover1]

go to

..........eq.1a, substitute y

........simplify

so, your solutions are:

 

[nycmathguy]

go to

..........eq.1a, substitute y

........simplify

so, your solutions are:

What can I say? Thank you so much. David Cohen questions are challenging.