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[136+(42×a×8-905)-27×80]÷5=19

Dau coroana!


Răspuns :

Răspuns:

(136+(42a×8-905)-2160)÷5=19

42a=19-136÷8+905+2160×5

42a=4.451,8

a=4.451,8÷42

a=105,9

Explicație pas cu pas:

sper ca ti-am fost de folos

[136+(42×a×8-905)-27×80]:5=19

[136+(42×a×897)-2160]:=19-5

[136+(42×a×897)-2160=14

42×a[136+887=2160-14

42×![1023-2146]

42×a +1137

a=1137:42

a=27