13-10-2020
Mathematics

contestada

4 (3r+4) = -8 (2r+5)

Respuesta :

barackodam barackodam

13-10-2020

Answer:

-2

Step-by-step explanation:

Open the brackets on both sides

12r + 16 = -16r - 40

collect like terms

12r + 16r = -40 - 16

28r = -56

r = -56/28

r = -2

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