Answers

2015-07-28T19:19:24+08:00

6 + (-5) + (-7)

Removing the parenthesis you'll have:

6 + (-5) + (-7) = 6 - 5 - 7

                        = -6


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2015-07-28T21:10:09+08:00
(Solution A)
1.same sign add and keep
-5 & -7 = -12

2.different signs subtract and follow the sign of the greater number
6 &-12 = -6, the answer

(Solution B)
1.X=6+(-5)+(-7)
X=6+(-12)
X=-6, the answer



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