SOLUTION: if y x 2 = z and z - y = 10 then what is z + y =

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Question 1118852: if y x 2 = z
and z - y = 10
then what is
z + y =
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Strange-Looking
Maybe meant to show as system%282y=z%2Cz-y=10%29findwhatisz%2By.

system%28z-2y=0%2Cz-y=10%29
%28z-y%29-%28z-2y%29=10-0
y=10
-
z=2y=20
-
z%2By=20%2B10=highlight%2830%29