ajutatima va rog punctul T

Răspuns:
[1140-(5045:a-909)]:130=8
b:130=8
b=130×8
b=1040
1140-(5045:a-909)=1040
1140-c=1040
c=1140-1040
c=100
5045:a-909=100
d-909=100
d=909+100
d=1009
5045:a=1009
a=5045:1009
a=5