0
Anonymous
-18
Loraine Quigley ∙
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-11 + -7 = -18
Wiki User
they are already even! 7 and 11 are the same as 7 plus 11. 7 plus 11 is 18! 18 is even!
x-7+7=11+7 x=11+7 x=18
7 + (-11) = -4
-7 + 11 = +4
the rule is add 7 because 4 plus 7 = 11