Question

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Answer 1

Explicación paso a paso:

1) Números: x + y

x = x => 23

Cómo es 9 unidades menor que otro, entonces se le sumará para que sea igual:

y = x + 9 => 23 + 9 => 32

x + y = 55

x + x + 9 = 55

2x = 55 - 9

2x = 46

x = 46/2

x = 23

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2) Adultos: 25$(x)

Universitarios: 8$(y)

Esta semana:

25(x) + 8(x + 180) = 4410

25x + 8x + 1440 = 4410

33x = 4410 - 1440

33x = 2970

x = 2970/33

x = 90

Adultos: x = 90

Universitarios: x + 180 = 90 + 180 = 270