Question

How do you solve `2(x+7)+x=20`?

Answer 1

`x=2`

Explanation:

Simplify first using the distributive property.
`2x+14+x=20`
`3x+14=20`
Solve.
`3x=6`
`x=2`

Answer 2

`x=2`

Explanation:

`2x+14+x=20`

`3x+14=20`

`3x=6`

Then divide both sides by `3`

`x=2`

Answer 3

`x=2`

Explanation:

Apply the distributive property

`2x+2*7+x=20`

Multiply by `7` to get `14`

`2x+14+x=20`

Add `2x` and `x` to get `3x`

`3x+14=20`

Since `14` does not contain the variable to solve for, move it to the right side of the equation by subtracting `14` from both sides.

`3x=-14+20`

Add `-14+20` to get `6`

`3x=6`

Divide each term by `3` and simplify.

Answer : `x=2`