Answers

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2013-12-31T09:14:48+08:00
Given:
4x -3 = 11x + 18

minus 4x both sides
-4x + 4x -3 = -4x + 11x +18
-3 = 7x + 18

minus 18 both sides
-3 -18 = 7x + 18 -18
-21 = 7x

divide 7 both sides
 \frac{-21}{7}  =  \frac{7x}{7}

so that leaves us with 
-3 = x 
or
x = -3
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2014-01-03T17:00:03+08:00
Given:
4x-3=11x+18

answer:
4x-3=11x+18
4x-11x=18+3
-7x=21
  -7

x= -3
0