Solve the equation. {:[18+k=30],[k=]:}

Identify the goal: Identify the goal. We need to find the value of k in the equation 18 + k = 30. Isolate the variable k: Isolate the variable k. To do this, we subtract 18 from both sides of the equation to get k on one side by itself. 18 + k - 18 = 30 - 18 Perform the subtraction: Perform the subtraction. k = 30 - 18 Calculate the result: Calculate the result. k = 12 Check the result: Check the result. Substitute k = 12 back into the original equation to verify the solution. 18 + 12 = 30 30 = 30 This is true, so our solution for k is correct.

Home

Math Problems

Grade 6

Multiply two decimals: where does the decimal point go?

Full solution

Q. Solve the equation.

\newline

\begin{array}{r} 18+k=30 \\ k=\square \end{array}

Identify the goal: Identify the goal. $\newline$ We need to find the value of $k$ in the equation $18 + k = 30$ .
Isolate the variable $k$ : Isolate the variable $k$ . $\newline$ To do this, we subtract $18$ from both sides of the equation to get $k$ on one side by itself. $\newline$ $18$ + k - $18$ = $30$ - $18$
Perform the subtraction: Perform the subtraction. $\newline$ $k = 30 - 18$
Calculate the result: Calculate the result. $\newline$ $k = 12$
Check the result: Check the result. $\newline$ Substitute $k = 12$ back into the original equation to verify the solution. $\newline$ $18 + 12 = 30$ $\newline$ $30 = 30$ $\newline$ This is true, so our solution for $k$ is correct.