Question 95126
Let x=cost of Chevrolet

Then (x+2000)=cost of Ford
And (x+2000)+2000=cost of Toyota

Now we are told that the above three prices add up to 66,000 dollars. So:

x+(x+2000)+((x+2000)+2000)=66,000 get rid of parens (actually we didn't need them in the first place)

x+x+2000+x+4000=66,000 start collecting like terms

3x+6000=66,000  subtract 6000 from both sides

3x+6000-6000=66,000-6000 finish collecting like terms

3x=60,000  divide both sides by 3

x=20,000--------------------------cost of Chevrolet

x+2000=20,000+2,000=22,000 ----------------cost of Ford
x+4000=20,000+4,000=24,000-----------------------Cost of Toyota

CK
20,000+22,000+24,000=66,000
66,000=66,000

Hope this helps---ptaylor