a=536+304-(560:7×3+10×27)

Răspuns :

= 536 + 304 - ( 80 x3 +270) = 536 +304 - ( 240 +270) = 536 +304 - 510 = 840 - 510 = 330 

A = 330 
A=536+304-(560:7×3+10×27)
a=536+304-(90x3+270)
a= 840-540
a=300