Răspuns :
2x <8, deci avem mai multe variante prin care 2x sa dea pe rand 7,6,5...1
a) 2x=7> x=7/2
b) 2x=6> x=6÷2=3
c) 2x=5> x=5/2
d) 2x=4> x=4÷2=2
e) 2x=3> x=3/2
f) 2x=2> x=2÷2=1
g) 2x=1> x=1/2
➡x € {7/2; 3; 5/2; 2; 3/2; 1; 1/2}
a) 2x=7> x=7/2
b) 2x=6> x=6÷2=3
c) 2x=5> x=5/2
d) 2x=4> x=4÷2=2
e) 2x=3> x=3/2
f) 2x=2> x=2÷2=1
g) 2x=1> x=1/2
➡x € {7/2; 3; 5/2; 2; 3/2; 1; 1/2}