Write an equation and solve for the unknown number.Twice a number, increased by 3 is 7

Answer 1

Let's denote the unknown number as x. The equation can be written as follows:

2x + 3 = 7

To solve for x, we first subtract 3 from both sides of the equation:

2x = 7 - 3
2x = 4

Now, we divide both sides of the equation by 2 to isolate the variable x:

x = 4/2
x = 2

Therefore, the unknown number is x = 2.