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balu736 [363]
4 years ago
11

Twice the difference of a number and 9 is 7​

Mathematics
2 answers:
Hoochie [10]4 years ago
6 0
(x-9)^2=7
“twice the difference of a number” would mean x-9 twice equals 7
lozanna [386]4 years ago
3 0

Answer:

x=12.5

Step-by-step explanation:

Let the number be x

2(x-9)=7

2x-18=7

2x=7+18

2x=25

x=25/2

x=12.5

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