Question

sendo U=Q determine o conjunto solução das inequações.
a) 4×-7≥3(×-4)
b) 2.(×+1)-3>×-5

Answer 1

f) (5x-3)/2< (3x - 4)/3
3*(5x-3)< 2*(3x - 4)
15x-9 < 6x - 8
15x - 6x < -8 +9
9x < 1
x = 1/9

g) 2/3x - 5/4 + x > 3/5

2/3x + x = 3/5 + 5/4
2/3x +3/3x =12/20 + 25/20
5/3x =37/20

5x =3*37/20
5x= 111/20
x = (111/20)/5
x = 111/100

a) 4x-7≥3(x-4)
 4x-7≥ 3x -12
x≥ -5


b) 2.(×+1)-3>×-5
2x +2 -3 > -5
2x-1> -5
2x> -4
x>-2