Question

3+[3+(a+a:3)×3] :3=20​

Answer 1

Răspuns:

3+[3+(a+1/3 a)×3]:3=20

3+(3+4/3 a ×3):3=20

3+(3+4a):3=20

3+ 3+4a/3 = 20

9+3+4a=60

12+4a=60

4a=60-12

4a=48

a=12