lilianaizquierdo
lilianaizquierdo lilianaizquierdo
  • 23-10-2018
  • Mathematics
contestada

someone please help me

someone please help me class=

Respuesta :

lizzyjov2 lizzyjov2
  • 26-10-2018

Answer:


Step-by-step explanation:

r+2r+3r+4r

r

=

10r

r

=10

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