Question

Aflați numerele necunoscute din exercițiile de mai jos:
A. a+75+75÷5=115
B. 300-bx8-109=47
C (48×c+216)÷40=27

VA ROGGGG! AM NEVOIE DE AJUTOR!!!DAU COROANA!!!​

Answer 1

Răspuns:

A. a+75+75÷5=115

a+75+15=115

a=115-90

a=25

B. 300-bx8-109=47

-8b-109=47-300

-8b=-253+109

b=144:8

b=18

C. (48×c+216)÷40=27

48c+216=27·40

48c=1080-216

c=864:48

c=18

Answer 2

a+75+15=115
a=115-90
a=25

8b-109=300-47
8b-109=253
8b=253-109
b=144:8
b=18

48c+216=40•27
48c+216=1080
48c=1080-216
c=864:48
c=18