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Virty [35]
2 years ago
11

−

Mathematics
1 answer:
tatuchka [14]2 years ago
5 0

Answer:

r = 3

Step-by-step explanation:

− 3 ( 6 r + 2 ) + 5 ( r + 1 ) = − 40

- 18r - 6 + 5 ( r + 1 ) = - 40

- 18r - 6 + 5r + 5 = - 40

-13r - 1 = - 40

-13r = - 39

r = 3

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