Question

Write an equation for each of the following problems and then solve. A number and 15 total 45

Answer 1

Answer:

Equation: x + 15 = 45

Solved: n = 30

Step-by-step explanation:

• A "number" can be represented by a variable, which is a letter that represents a value. For example, "n" can be a variable for number.
• The word "and" typically means that one term is being added to another.
• "Total" indicates the sum of the numbers.

You can think of this as saying, "A variable plus 15 equals 45"

• Therefore, the equation is: n + 15 = 45

Now that you have the equation, you can solve for the variable (in this case it's "n"), using the inverse operation.

Step 1: Isolate n by subtracting 15 from both sides of the equation

• n + 15 = 45

• n + (15 -15) = (45 - 15)
• Result: n = 30

Recommended: To check your answer, substitute the result you got for "n" into the original equation:

• n + 15 = 45
• 30 + 15 = 45
• 45 = 45; True

Answer 2

Answer:

x+15=45

  -15 15

    x=30

30+15=45