Calcule os valores de X e Y pelo sistema:

A- x+y=42
x-y=8

B- 2x+y=26
x-y=4

C- 3x-y= -5
5x-2y= -1

D- x+2y= -4
3x-2y= 20


E- x+3y=3
2x-y= 18

F- x+y=84
x-y=16​
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