
Armin T. answered 03/23/14
Tutor
5
(3)
Advanced Mentor in Biology, Chemistry, and Physics Concepts
Expression = -2(7-n)+4
Step 1: DISTRIBUTE = -2(7) -(-2(n)) + 4=0
Step 2: Multiply it out = -14 +2n + 4=0
Step 3: get a variable (n) on one side. 2n= -4+14
Step 4: solve = 2n= 10
Step 5: finish = n=5

Armin T.
sorry.
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Kay G.
03/24/14