Answer:28 / 4 = -7.
Step-by-step explanation:
28 / 4 = -7.28 / 4 = -7.28 / 4 = -7.
The solution to the expression
gives (x + 4)/2
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more number and variables.

The solution to the expression
gives (x + 4)/2
Find out more on equation at: brainly.com/question/2972832
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Answer: Human calculator says 21 x 21 = 441!
Good Luck!
Try simplifying the equation first. Don't fully understand the question but I hope this helps.
2x cubed
2x * 2x * 2x = 8x
8x+4x= 12x
12x=3