Question

ali add 5 subract 7 and duble the sum the result is 9 find the number​

Answer 1

Answer:

let no. be x

2(x+5-7)=9

2(x-2)=9

2x-4=9

2x=13

x=13/2

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Answer 2

Step-by-step explanation:

let the number x

now

5 is added in x

x+5

now subtract 7 from x+5

x+5-7

now this number is doubled

2 (x+5-7)=9 (given in question)

2x+10-14=9

2x-4=9

2x=9+4

x=13/2

x=6.5