Question

RESOLVA AS INEQUAÇÕES

3x-2/5+4-x/2>1/5
.
2x+5(x-4)$\geq$4 (x+3)-5

Answer 1

Resposta:

a) 3x-2/5+4-x/2>1/5

MMC (5,2,5)=10

6x-4+20-5x>2

x>2-20+4

x>6-20

x>-14

S={x>-14}

------------------

b)2x+5(x-4)>ou igual 4(x+3)-5

2x+5x-20>0 ou igual 4x+12-5

7x>ou igual 4x+7

7x-4x> ou igual 7

3x>ou igual 7

x>ou igual 7/3

S={x>ou igual 7/3}