Days in boston=x
days in colorado=1.4x
boston+colorado=2.4x
475=2.4x
475/2.4=2.4x/2.4
198=x
198*1.4=277
days in boston=198
days in colorado=277
198+277=475
<h2>Answer:</h2><h2>-4</h2><h2 /><h2>Hope this helps!!</h2>
For the first 1 X= 11 because all you need to do is add or subtract the numbers visible.
The second would be 2.