How do you solve #6/2=7/(x+9)#?

1 Answer
Sep 15, 2016

Answer:

#x = - (20) / (3)#

Explanation:

We have: #(6) / (2) = (7) / (x + 9)#

First, let's cross-multiply:

#=> 6 cdot (x + 9) = 7 cdot 2#

Then, let's divide both sides of the equation by #6#:

#=> x + 9 = (7 cdot 2) / (6)#

#=> x + 9 = (7) / (3)#

Finally, to solve for #x#, let's subtract #9# from both sides:

#=> x = (7) / (3) - 9#

#=> x = - (20) / (3)#