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(48×c+216):40=27 va rog urgent!

Răspuns :

(48×c+216):40=27
48c+216=1080
48c=864
c=18
(48·c+216)÷40=27
(48·c+216)=27·40
(48·c+216)=1080
(48·c)=1080-216
(48·c)=864
c=864÷48
c=18
sper ca te am ajutat