The number is -11.
Step-by-step explanation:
Let,
the number be x.
According to given statement;
Sum of a number and five is doubled;
2(x+5)
is equals to one less than the number
= x-1
Combining both the sides and forming an equation
2(x+5)=x-1
[tex]2x+10=x-1\\2x-x=-1-10\\x=-11\\[/tex]
The number is -11.
Keywords: addition, subtraction
Learn more about subtraction at:
- brainly.com/question/1329620
- brainly.com/question/1332667
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