ma poate ajuta cineva la aceste exerciții
va rog

Răspuns:
9. 3×8=2x
24=2x
2x=24
x=24÷2
x=12
1.A={4,7,2,8,11}
B={2,3,4,5,6,7,8,9}
A U B={2,3,4,5,6,7,8,9,11}
A u intors B={ 4,7,2,8}
A\B={11}
B\A={3,5,6,9}