Question

Completeaza casetele​

Answer 1

Răspuns:

a. ²⁾4/5-a/10=7/10

8-a=7

a=8-7

a=1

b. ⁹⁾5/a+³⁾4/3=17/9

45/9a+12/9=17/9

45/9a=17/9-12/9

45/9a=5/9

45a=9×45

a=9

c. 11/12+5/a=31/12

5/a=31/12-11/12

5/a=20/12

20a=5×12

a=60:20

a=30

d. a/3+13/18=19/18

a/3=19/18-13/18

a/3=6/18

18a=18

a=1