Respuesta:
Mira si
A + B = 78
( A + ( A +30))= 78
Despejas A
2 A= 78-30
A= 48/3
A= 24
( A + B) =78
(24 + B )=78
B= 78-23
B= 54
Entonces dices que D= (A -11)
D=(24-11)
D=13
Explicación paso a paso:
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Respuesta:
Mira si
A + B = 78
( A + ( A +30))= 78
Despejas A
2 A= 78-30
A= 48/3
A= 24
( A + B) =78
(24 + B )=78
B= 78-23
B= 54
Entonces dices que D= (A -11)
D=(24-11)
D=13
Explicación paso a paso: