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

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Answer 1 · 2016-09-15T15:06:11

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

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:

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

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

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