The number is 5.
Step-by-step explanation:
Let,
x represent the unknown number.
According to given statement;
add five to twice a number the results is fifteen
2x + 5 = 15
Subtracting 5 from both sides
[tex]2x+5-5=15-5\\2x=10[/tex]
Dividing both sides by 2
[tex]\frac{2x}{2}=\frac{10}{2}\\x=5[/tex]
The number is 5.
Keywords: variable, addition
Learn more about addition at:
- brainly.com/question/10382722
- brainly.com/question/10387593
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