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x=22
y=18
************************************************
x+y=40
4y+y=40
y+y=40-4
2y=36
y=36/2
y=18
***************************************************************
x+y=40
x+18=40
x=40-18
x=22
**********************************************************************
Prova Real
22+18=40
y=18
************************************************
x+y=40
4y+y=40
y+y=40-4
2y=36
y=36/2
y=18
***************************************************************
x+y=40
x+18=40
x=40-18
x=22
**********************************************************************
Prova Real
22+18=40
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