Răspuns:
a)
x • 3/8 = 3/4
x = 3/4 • 8/3
x = 2
b)
rad3/3 + x > 4rad3/3
x > 4rad3/3 - rad3/3
x > 3rad3/3
x > rad3
x : 2 2/3 = 3/4
x : (2×3+2)/3 = 3/4
x : 8/3 = 3/4
x = 8/3 × 3/4
x = 8/4
1/√3 + x > 4√3/3
√3/3 + x > 4√3/3
x > 4√3/3 - √3/3
x > 3√3/3
x > √3
x ∈ ( √3 ; +oo )
