3 years ago

Twice a number, decreased by 9 is 12

Mathematics

2 answers:

DiKsa [7]3 years ago

8 0

Answer:

10.5

Step-by-step explanation:

2x-9=12

2x=12+9

2x=21

x=21/2

x=10.5

Serhud [2]3 years ago

7 0

Answer:

10.5

Step-by-step explanation:

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