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a fost răspuns

DETERMINATI NUMARUL X,STIIND CA;a)(57-8-x)-23=6;b)57-(8+x)-23=6;c)57-(8+x-23)=6;d)(57-8)-(x-23)=6.

Răspuns :

Hjgdbf
a) 57-8-x=6+23
-8-x=29-57
-8-x=-28
-x=-20 |×(-1)
x=20
b)57-(8+x)=6+23
8+x=29-57
x=-28-8
x=-36
c) 8+x-23=6-57
8+x=-51+23
x=-28-8
x= -36
d)57-8-x+23=6
57-8-x=6-23
-8-x=-17-57
-x=-74+8
-x=-66 |×(-1)
x=66

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