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Given that 6x + y = 15, the value of 3x can be written in terms of y as ay + b for some numbers a and b. What is the simplified value of a + b?

 May 28, 2020
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6x = -y+15

3x = -1/2 y + 15/2

a = -1/2

b=15/2

-1/2+15/2=14/2

14/2 = 7

 May 28, 2020

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