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Katy tried to solve an equation step by step. $\newline$ $r-3=14.3$ $\newline$ $r-3+3=14.3-3 \quad$ Step $1$ $\newline$ $r=11.3 \quad$ Step $2$ $\newline$ Find Katy's mistake? $\newline$ Choose $1$ answer: $\newline$ (A) Step $1$ $\newline$ (B) Step $2$ $\newline$ (C) Katy did not make a mistake

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Add and subtract integers: word problems

Full solution

Q. Katy tried to solve an equation step by step.

\newline

r-3=14.3

\newline

r-3+3=14.3-3 \quad

Step

1

\newline

r=11.3 \quad

Step

2

\newline

Find Katy's mistake?

\newline

Choose

1

answer:

\newline

(A) Step

1

\newline

(B) Step

2

\newline

(C) Katy did not make a mistake

Step $1$ : Add $3$ to both sides: Katy starts with the equation $r-3=14.3$ and wants to isolate $r$ . To do this, she adds $3$ to both sides of the equation in Step $1$ . $\newline$ Calculation: $r-3+3=14.3+3$ $\newline$ Math error check:
Step $2$ : Simplify and Add: In Step $2$ , Katy simplifies the left side by combining like terms $r-3+3$ which results in $r$ , and on the right side, she adds $14.3$ and $3$ . $\newline$ Calculation: $14.3 + 3 = 17.3$ $\newline$ Math error check:

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