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19 but you should of put (2 + 7) + (8+2)
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The answer is correct but the advice is not. Addition of real numbers is associative which means that you can write strings of addition WITHOUT the need for parentheses (brackets).
(2 + 7) + (8 + 2) = 2 + (7 + 8) + 2 = ((2 + 7) + 8) + 2 etc. ANY one of the sums can be written, without ambiguity, as 2 + 7 + 8 + 2
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∙ 12y ago
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Is 2 plus 7-8 and 8 plus 7-2 equivalent?
No. 2 + 7 - 8 = 1 8 + 7 - 2 = 13
What is 16 plus 2 plus 9 plus 4 plus 7 plus 8?
16 + 2 + 9 + 4 + 7 + 8 is = 18 + 9 + 4 + 7 + 8 = 27 + 4 + 7 + 8 = 31 + 7 + 8 = 38 + 8 = 46
What is 2 plus 4 plus 8 plus 6 plus 3 plus 7 plus 9 plus 8?
2 + 4 + 8 + 6 + 3 + 7 + 9 + 8 = 47
How do you solve this 7 plus 2 plus 8 plus 3?
7 plus 2 is 9. 9 plus 8 is 17. 17 plus 3 is 20.
What is the answer for 2 plus ⅞?
2 7/8
What is 8 minus 2 plus -7?
8 - 2 = 6 + (-7) = -1
What is 2 plus 5 plus 6 plus 7 plus 8 plus 9 plus 10?
2 + 5 is 7 + 6 =13 + 7 = 20 + 8 = 28 + 9 = 37 + 10 is 47.
What is the value of 7 plus 8-2?
7 + 8 = 15 - 2 = 13^35.
What property does the following example illustrate 2 plus 8 plus 7 equals 2 plus 8 plus 7?
As it appears the only thing it illustrates is the identity property ie anything is equal to itself. If there were brackets: (2 + 8 ) + 7 = 2 + (8 + 7) then that would illustrate the associative property of addition of numbers.
7 plus 3-8 equals?
7 + 3 - 8 = 2
What is 7 plus 8 plus 4 plus 7 plus 5 plus 6 plus 2 equals?
The answer is 39.7 + 8 = 15 + 4 = 19 + 7 = 26 + 5 = 31+ 6 = 37 + 2 =39
What is 2 and 1 over 4 plus 3 and 7 over 8?
((2 plus (1 over 4)) plus 3) plus (7 over 8) = 6.12500
