How do you solve #3(x-18)=5(x-12)#?
Let's expand the equation by doing the multiplication
Now if we add to both sides
Same thing can be applied with
And what we have to do now is just the sum of the similiar terms
Multiplying both term by
And to finally get the result we can divide both term by
To check whether the result it's right, just plug in the value in the initial equation. If the left and right quantity are the same we did a good job.