The equation for the sentence below is x - 23 = 28.
The solution to the equation is x = 5.
<h3>How to model a sentence with an equation?</h3>
An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
Therefore, the sum of a number(x) and - 23 is 28 can be represented with an equation as follows:
The unknown number is x.
Hence,
x + (-23) = 28
Therefore, the equation from the sentence above is x - 23 = 28.
Now, let's solve the equation for x as follows;
x - 23 = 28
add 23 to both sides of the equation
x - 23 + 23 = 28 - 23
x = 5
Therefore, the value of x is 5
learn more on equation here: brainly.com/question/28467287
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