3 years ago

3c+-9=18 I don't know how to do this problems

2 answers:

8 0

3c+-9=18

+-=-

3c-9=18

move 9c to the other side and the sign changes from negative to positive.

3c-9+9= 18+9

3c= 27

Divide by 3

c=9

3 0

3 because you have to add -9 to 18 then divide 3c by tht answer

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