# How do you solve # ( x+12 )/( x-4 ) = ( x-3 )/( x-7 ) #?

##### 2 Answers

#### Explanation:

**First, we'll cross multiply: if #a/b=c/d# then #a*d=b*c#**

**Expand**

**Add 84 to both sides and simplify**

**Subtract #x^2-7x# from both sides and simplify**

**Divide both sides by 12 and simplify**

~ Alex

#### Explanation:

To solve this, we use cross multiplication:

Based on this, in this case you would do:

And now we just expand and simplify:

Combine like terms:

Subtract

Add

Add

Divide both sides by

Hope this helps!