Question

3.(2x-3)-3x+12=27 e 10-2x=3x

Answer 1

3.(2x-3)-3x+12 = 27    
6x-9-3x+12 = 27
6x-3x = 27+9-12
3x = 24
 x = 24 / 3
 x = 8
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10 - 2x = 3x
-2x-3x = -10  (.-1)
5x = 10
 x = 10 / 5
 x = 2