Me pls this is very hard and i can't do it at all

Length x width = Area
(3x-1)(2x+5) = 495
So, 3x times 2x is and 3x times 5 is 15x. -1 times 2x is -2x and -1 times 5 is -5. Putting that all together gives you something like this.--
+ 15x - 2x - 5 = 495        (like terms = 15x-2x =13x)
+ 13x - 5 = 495
Subtracting 495 on both sides....
+ 13x - 5 - 495 = 495-495
+ 13x - 500 = 0

There you go... and if you need further help, please ask me.
Please Choose my answer brainliest if I helped.

15-6+7=16. The expression should be written as 15-(6+7).

Step-by-step explanation:

The sum of 6 and 7 is (6+7). 15 minus the sum of 6 and 7 would then be written as 15-(6+7), because this way you subtract the entire sum from 15. The expression 15-6+7 just subtracts 6 from 15, then adds 7 onto this number, which is not the same thing as subtracting 6+7 from 15.