write an equation and solve twice a number increased by 3 is 7
Let's denote the number as "x".
According to the problem, twice a number increased by 3 is equal to 7.
Therefore, the equation is:
2x + 3 = 7
To solve for x, we can start by isolating x on one side of the equation. We can do this by subtracting 3 from both sides:
2x + 3 - 3 = 7 - 3
2x = 4
Now, we can solve for x by dividing both sides by 2:
2x / 2 = 4 / 2
x = 2
Therefore, the value of the number "x" is 2.