Write an equation and solve: Four times a number, decreased by 4 is 8.
O 3
01
O 48
16
Let's represent the unknown number as "x".
The given equation can be written as: 4x - 4 = 8.
To solve for x, we need to isolate it on one side of the equation.
Adding 4 to both sides of the equation:
4x - 4 + 4 = 8 + 4
4x = 12
Dividing both sides of the equation by 4:
(4x)/4 = 12/4
x = 3
Therefore, the value of the unknown number is x = 3.