Question

please heeeelppppppppppppppp​

Answer 1

27.

14+13 mai mic decat 32+19

27+18 mai mic dacat 76-14

28.

a+36-25=47⇒a+36=72⇒a=36

91-a+17=54⇒91-a=37⇒91=37+a⇒a=54

29.

b=23+18=41⇒a+b=23+41=64

30.

19+29+c=80⇒48+c=80⇒c=32

31.

14≤a-1≤18⇒15≤a≤19⇒a=15,16,17,18,19