Question

resolva as seguintes inequações ir: a)2x+1≤x+6 b)2-3≥x+14 c)2(x+3)>3(1-x)

Answer 1

a)2x+1≤x+6   ....x≤5

b)2-3≥x+14   ...-15 ≥ x

c)2(x+3)>3(1-x)  
x+3>3-3x

4x>0

x>0

Answer 2

 a)2x+1≤x+6

 2x - x ≤ 6 - 1 ==> x ≤ 5
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b)2-3≥x+14

 - 3x - x ≥ 14 - 2 ==> -2x ≥ 12(-1) ==> 2x ≤ -12 ==> x ≤ - 6

c)2(x+3)>3(1-x)

2x + 6 > 3 - 3x ==> 2x + 3x > 3 - 6 ==> 5x > - 3 ==> x > - 3/5