Question

The sun of 2 times a number and seven is thirty

Answer 1

2k + 7 = 30

Explanation:

Our task is to solve the equation and find the number.

The equation is described as:

"The sum of 2 times a number and 7 is 30"

Let's use k as the number.

2 times the number ⇔ 2 × k ⇔ 2k

The sum of 2 times a number and 7 ⇔ the sum of 2k and 7 ⇔ 2k + 7

`\hspace{370}\above4`

We get the following equation:

`\twoheadrightarrow\quad\sf{2k+7=30}`

(optional) Solve for k.

`\begin{aligned}\twoheadrightarrow\quad\sf{2k+7=30}\\\twoheadrightarrow\quad\sf{2k=23}\\\twoheadrightarrow\quad\sf{k=\cfrac{23}{2}\end{aligned}`

Answer 2

2x+7=30

Explanation:

2 times a number would be 2x

The sum of 2 times a number and 7 would be 2x+7

When it states that The sum of 2 times a number and 7 IS thirty, the IS would mean an equal sign, 2x+7=30