Question

eleviii clasei a 3a au confectionat martisoare timp de 3 zile .im prima zi au confectionat 4pe 9 din nr total de martisoare a doua zi cu 1 pe 9 mai putin iar in a 3 zi restyl.ce parte din nr total reprezinta nr de martisoare confectionate in a 3a zi? e vb despre fractie in aceasta problema

Answer 1

|___|___|___|___|___|___|___|___|___|              = total

|___|___|___|___|                                                 = prima zi

|___|___|___|                                                        = a doua zi

|___|___|                                                              = a treia zi

1=4/9+(4/9-1/9)+X=4/9+3/9+X=7/9+X

X=1-7/9

1=9/9

X=9/9-7/9

X=2/9