Hola.
a) 3x<20-8
x<12:3
x<4
b) 3x-2x>19-1
x>18
Espero te sea útil.
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Hola.
a) 3x<20-8
x<12:3
x<4
b) 3x-2x>19-1
x>18
Espero te sea útil.