Question

Resolva as inequaçoes

a) 8x-16>2x+8=x>2

b) 2.(3x+7)<-4x+8 =[tex][/tex]

c) 20-(2x+5)<11+8x =

Answer 1

a) 8x-16>2x+8=x>2

8x - 2x > 8 + 16  = x > 2

6x > 24 = x > 2

x > 4 = x > 2 (FALSO)

b) 2.(3x+7)<-4x+8 =

6x + 14 < -4x + 8

10x < -6

x < -3/5 (VERDADEIRO)

c) 20-(2x+5)<11+8x =

40x - 100 < 11 + 8x

32x < 111

x < 111/32 (VERDADEIRO)