Solve for x: [tex]$x+9.72=21$[/tex]
Answer (2)
Subtract 9.72 from both sides of the equation.
Simplify the equation to isolate x .
Calculate the value of x .
The solution is 11.28 .
Explanation
Understanding the Problem We are given the equation x + 9.72 = 21 and our goal is to solve for x . This means we want to isolate x on one side of the equation.
Isolating x To isolate x , we need to subtract 9.72 from both sides of the equation. This gives us:
x + 9.72 − 9.72 = 21 − 9.72
Calculating the Value of x Now, we perform the subtraction:
x = 21 − 9.72
x = 11.28
Final Answer Therefore, the solution for x is 11.28 .
Examples
Imagine you are buying an item that costs $9.72 and you pay with a 21 bi ll . S o l v in g t h ee q u a t i o n x + 9.72 = 21$ helps you calculate the change you should receive, which is $11.28. This simple algebraic problem is useful in everyday transactions to ensure you get the correct change back.
To solve for x in the equation x + 9.72 = 21, we subtract 9.72 from both sides to isolate x. This gives us x = 21 - 9.72, which simplifies to x = 11.28. Thus, the final solution is x = 11.28.
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