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09-12-2018
Mathematics

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If 3a= -9 ab = 15. What's the value of b

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vijetaramasamy vijetaramasamy

09-12-2018

Answer:

b = -5

Step-by-step explanation:

So we know

3a = -9

Divide 3 on both sides

a = -3

Plug a in to the other equation

-3b = 15

divide -3 on both sides

b = -5

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