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Buna! Va rog,am nevoie de ajutor la matematica!! Aflati termenul necunoscut:
(75-b+ 5x6) - (63-5 x 8) = 5x10+40 :8


Răspuns :

 (75-b+5x6)-(63-5x8)=5X10+40:8
(75-b+5x6)-(63-5x8)=55
(75-b+30)-23=55
105-b=55+23
b=105-88
b=17
(75-b+30)-(63-40)=55
(75-b+30)-23=55
(75-b+30)=55+23
105-b=78
105-78=b
b=27