Explicación paso a paso:
1-
5+x=16
x=11
2-
x+y+z=26
y+z=26-x
2x+y+z=32
-remplazas
2x+26-x=32
x=6
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Explicación paso a paso:
1-
5+x=16
x=11
2-
x+y+z=26
y+z=26-x
2x+y+z=32
-remplazas
2x+26-x=32
x=6