Respuesta :

eriabn

Answer:

The answer is 50r-18

Step-by-step explanation:

2(5r-5) +8(5r-1)=2 x 5r/2 x -5 + 8x 5r/8 x -1

=10r-10+40r-8

=10r+40r-10-8

=50r-18

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