Question

Resolva as inequacoes sendo U=Q. a)2.(×+6)-3(×+1)+5(×-4)>0 b)4(1-×)+3<2(2×-4) c)(×+4)-(×-7)>2×-3​

Answer 1

Resposta:

Explicação passo-a-passo:

a)

2x + 12 - 3x - 3 + 5x - 20 > 0

4x - 11 > 0

4x > 11

x > 11/4

b)

4 - 4x + 3 < 4x - 8

-4x - 4x < -8 - 7

-8x < -15

8x > 15

x > 15/8

c)

x + 4 - x + 7 > 2x - 3

-2x > -3 - 11

2x < 14

x < 14/2

x < 7