2 years ago

Given that

Mathematics

1 answer:

Mekhanik [1.2K]2 years ago

8 0

Step-by-step explanation:

R = 3x + 9y

When y = 6 and R = 7

7 = 3x + 9.6

7 = 3x + 54

7 - 54 = 3x

-47 = 3x

x = -47/3

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EXPLANATION

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