Harper wrote the expression 15-6+7 to represent "15 minus the sum of 6 and7 evaluate 15 -6+7 and then explain why harper expression is incorrect

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.

the battle of gettysburg is considered the "high water mark" of the confederacy because it marked the greatest advance of the confederate forces against the union.

(2,6)

step-by-step explanation:

cause i just did this and got the answer

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