describe the error and fix it : the sum of a number n and 4 is no more than 13 , n+4

Question

describe the error and fix it : the sum of a number n and 4 is no more than 13 , n+4<13

debbieg · Answer

"Not more than 13" does not mean "less than 13". If n=9, then the sum is "no more than 13" but does not satisfy the inequality.

Now, you tell me - how can you fix it?

anonymous · Answer

I dont know i am lost

debbieg · Answer

$$x <10$$ means that x is less than 10. Which means that x can NOT be = 10.

$$x \le10$$ means that x is not more than 10.... but COULD BE =10.

debbieg · Answer

So n+4<13 means that the sum on the left is LESS THAN 13. That is different than saying that it is NO MORE THAN 13.

anonymous · Answer

Oh ok thanks