Fifteen more than twice a number is -23
2n + 15 = -23
Let's solve the problem step-by-step.
Step 1: Let's assume the number is represented by the variable "x".
Step 2: "Twice a number" can be expressed as 2 * x.
Step 3: "Fifteen more than twice a number" can be expressed as 2 * x + 15.
Step 4: According to the problem, "Fifteen more than twice a number is -23", we can set up the equation: 2 * x + 15 = -23.
Step 5: Let's solve the equation:
Subtract 15 from both sides: 2 * x = -23 - 15.
Simplify: 2 * x = -38.
Divide both sides by 2: x = -38 / 2.
Simplify: x = -19.
Step 6: Therefore, the number is -19.
To solve this problem, we'll set up an equation and then solve for the unknown number.
Let's assume the unknown number is represented by the variable 'x'.
According to the problem, "Fifteen more than twice a number is -23".
Twice a number can be represented as 2x.
And fifteen more than twice the number can be represented as 2x + 15.
So the equation becomes:
2x + 15 = -23
To isolate the variable 'x', we need to solve for it.
Subtracting 15 from both sides of the equation:
2x + 15 - 15 = -23 - 15
Simplifying:
2x = -38
Dividing both sides of the equation by 2:
2x/2 = -38/2
Simplifying again:
x = -19
Therefore, the unknown number is -19.