Let's call the unknown number "x".
According to the problem, "twice a number added to 1 equals 7", which can be written as:
2x + 1 = 7
To solve for x, we need to isolate x on one side of the equation.
First, we can subtract 1 from both sides:
2x = 6
Then, we can divide both sides by 2:
x = 3
Therefore, the number is 3.
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Answers & Comments
Let's call the unknown number "x".
According to the problem, "twice a number added to 1 equals 7", which can be written as:
2x + 1 = 7
To solve for x, we need to isolate x on one side of the equation.
First, we can subtract 1 from both sides:
2x = 6
Then, we can divide both sides by 2:
x = 3
Therefore, the number is 3.