Question

2x-1,75 mai mare a au egal 6,3:3+1

Answer 1

2x-1,75≥6,3:3+1
2x-1,75≥2,1+1
2x-1,75≥3,1 |+1,75
2x≥4,85 | :2
x≥2,425
S=(+infinit ;2,425]

Answer 2

2x>egal 1,75+6,3:3+1>egal 1,75+2,1+1>egal 4,85
deci x>egal 4,85:2>egal 2,425
obs: depinde carei multimi apartine x, daca e R, ramane asa, daca e N, atunci x>egal 2,425, deci x apartine [3, 4....+infinit)