Respuesta:
A. x = 16/45
B. y = 43/20
Explicación paso a paso:
A. x . 5/4 = 4/9
x = 4/9 ÷ 5/4
x = (4 . 4) / (9 . 5) = 16/45
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B. (5/3) . y - 4/3 = 9/4
Multipiicamos por MCM(3, 4) = 12
12 . (5/3) . y - 12 . 4 / 3 = 12 . 9 / 4
20y - 16 = 27
20y = 27 + 16
20y = 43
y = 43/20
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Respuesta:
A. x = 16/45
B. y = 43/20
Explicación paso a paso:
A. x . 5/4 = 4/9
x = 4/9 ÷ 5/4
x = (4 . 4) / (9 . 5) = 16/45
----------------------------------------------------------
B. (5/3) . y - 4/3 = 9/4
Multipiicamos por MCM(3, 4) = 12
12 . (5/3) . y - 12 . 4 / 3 = 12 . 9 / 4
20y - 16 = 27
20y = 27 + 16
20y = 43
y = 43/20