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1)
A___76
B____6
C____77
D___ 12
2)
A) 1/3 +1/9=
3/9+1/9= 4/9
Ha gastado 4/9 del dinero.
B)
5/8 de 42
(5x42)/8= 210/8 = 26,25
Lleva recorrido 26,25km
3)
A)
M+18= - 4
M= - 4 - 18
M= - 22
B) - 3
C)
Y-30= 17
Y= 17 +30
Y= 47
D)
505 - n = - 20
-n= - 20 - 505
-n= - 525
n= 525
Saludos❤️