Question

Sa se rezolve in multimea numerelor reale inecuatiile: a) -2x+3>0
b)4-3(1-x) c)5x-7>=-4x+11

Answer 1

Răspuns:

Explicație pas cu pas:

a) -2x+3>0

2x < 3

x < 3/2

_____________

b) 4 - 3(1 - x) lipseste continuarea....

______________

c)

5x - 7 ≥ -4x + 11

5x + 4x ≥ 11 + 7

9x ≥ 18

x ≥ 18 : 9

x ≥ 2

Answer 2

Răspuns:

a)-2x+3>0

-2x>-3

x<3/2

S={-infinit 3/2}

b)mai departe...

c)5x-7>-4x+11

5x+4x >11+7

9x>18

x>18/2

x>2

S={2+infinit}