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[7-(17x6-810:8)x 3]:7 REPEDE PLS

Răspuns :

[7-(17x6-810:8)x 3]:7 =[7-(102-405/4)x 3]:7 =[7-(408/4-405/4)x 3]:7 =
=( 7-3/405 x 3) : 7=(7-9/405) :7=(7- 1/45) : 7=(315/45 -1/45) : 7= 314 /45 *1/7=
=314 / 315
[7-(17*6-810:8)*3]:7
[7-(102-101,25)*3]:7
(7-0,25*3):7
(7-2,25):7
4,75:7=0,67857143

[7-(17*6-810:8)*3]:7= 19/28 =0,678.....