Question

twice the difference of a number and 9 is 7​

Answer 1

(x-9)^2=7
“twice the difference of a number” would mean x-9 twice equals 7

Answer 2

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