Question

Daca 9 repezinta 3 supra 4 dintr-un nr x atunci x=​

Answer 1

Răspuns:

3/4×x=9

4/3×3/4x=9

1/3×3x=4/3×9

3 se reduce

x=4/3×9

x=4×3

x=12

Answer 2

x*3/4=9

x=9:3/4

x=9×4/3

x=36/3

x=12

/ inseamna supra.