Question

what must be added to a+3b-2c to get -9b?​

Answer 1

Answer:

-a-12b+2c

Step-by-step explanation:

a+3b-2c + x = -9b

x = -9b-a-3b+2c

x = -12b-a+2c

Answer 2

Answer:

The number must be added Be J

So..

a + 3b - 2c + J = -9B

J = -9B - a - 3b + 2c

J = - 12b - a + 2c

Step-by-step explanation:

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