a) = 9x+3
b)= 4x +-2
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Respuesta:
a) = 9x+3
b)= 4x +-2
Explicación paso a paso:
a) (3x+7+6x−4)
=3x+7+6x+−4
=(3x+6x)+(7+−4)
= 9x+3
b) (3x+2)+(x-4)
= 3x+2+x+-4
= (3x+x)+(2+-4)
= 4x +-2