Answered

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Katy tried to solve an equation.

[tex]\[
\begin{array}{l}
r - 3 = 14.3 \\
r - 3 + 3 = 14.3 - 3 \\
r = 11.3 \\
\end{array}
\][/tex]

Where did Katy make her first mistake?

Choose 1 answer:

A. In the first line
B. In the second line
C. In the third line
D. There is no mistake

Sagot :

chibabykalu16

Answer:

B. In the second line

Step-by-step explanation:

Given:

  • [tex]r - 3 = 14.3\\[/tex]

What is an Equation?

An equation is a statement that two things are equal with an equal sign e.g. x + 1 = 10, 7 + 1 = 8, 9=9. What is on the left-hand side (LHS) is equal to what is on the right-hand side (RHS)

To find the area of computational error, let's try solving it step-by-step


First line: r - 3 = 14.3

It represents the equation from the main problem which Katy is trying to solve so it should be correct!

Second line: r - 3 + 3 = 14.3 - 3

There's an error as Katy was meant to subtract 3 from both sides to remove -3 from the RHS and balance the equation leaving the result of r

The resulting value is wrong due to the error from the previous step in Katy's solution

The correct solution

r - 3 = 14.3

r - 3 + 3 = 14.3 + 3

r = 17.3

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