Question

I am A father who needs the answer to make sure my kids did it right. Thank you Use mental math to solve each equation. Equations Question Question #1) 16 + x = 20Question #2) x - 4 = 6Question #3) 2x = 22Question #4) x divided by 3 = 8Question #5) 5x = 10

Answer 1

`\begin{gathered} 1)\text{ x=4} \\ 2)\text{ x=10} \\ 3)\text{ x=11} \\ 4)\text{ x=24} \\ 5)\text{ x=2} \end{gathered}`

Explanation:

To solve these simple equations use inverse operations to solve equations.

*Addition and subtraction are inverse operations, like multiplication and division.

Question #1.

`\begin{gathered} 16+x=20 \\ x=20-16 \\ x=4 \end{gathered}`

Question #2.

`\begin{gathered} x-4=6 \\ x=6+4 \\ x=10 \end{gathered}`

Question #3.

`\begin{gathered} 2x=22 \\ x=(22)/(2) \\ x=11 \end{gathered}`

Question #4.

`\begin{gathered} (x)/(3)=8 \\ x=8\cdot3 \\ x=24 \end{gathered}`

Question #5.

`\begin{gathered} 5x=10 \\ x=(10)/(5) \\ x=2 \end{gathered}`