Respuesta :

Answer: -1

Step-by-step explanation:

3( x +7 ) =18

8Use distributive property

3x + 21 = 18

Substract 21 from both sides

3x = -3

Divide 3 by both sides

x = -1

Another way to solve:

3( x +7 ) =18

Divide 3 by both sides

x + 7 = 6

Substract 7 by both sides

x = -1

chipp05

Answer:

x = -1

Step-by-step explanation:

In order to answer this question, all we have to do is simplify the equation:

3(x + 7) = 18

3x + 21 = 18

-21 -21

3x = -3

/3 /3

x = -1

You can even put this answer in the equation to check.

Hope this helps! :)