28 + 19 = 47
Commutative property of addition.
22 + 24 + 28 + 25 + 20 + 19 = 138
47.
-19 + 37 = 18.
-4 + 19 = 15
19+-26 = 19 - 26 = -7
19 + 40 + 110 + 115 + 240 + 50 + 54 + 28 + 58 = 714
64It is the same as 17+28+19 = 64
(-11) + (+19) = -11 + 19 = 8
The answer is 13. Thank you.
-15 + 19 + (-26) + 11 = -41 + 30 = -11