# Evaluar expresiones con dos variables: fracciones y decimales

Ya hemos evaluado expresiones con dos variables. Ahora es tiempo de hacerlo con expresiones con fracciones y decimales.

# Revisemos otro ejemplo.

Evalúa start fraction, 1, divided by, 3, end fraction, a, minus, 1, minus, start fraction, 1, divided by, 2, end fraction, b cuando a, equals, 12 y b, equals, 6.
empty space, start fraction, 1, divided by, 3, end fraction, start color blueD, a, end color blueD, minus, 1, minus, start fraction, 1, divided by, 2, end fraction, start color goldD, b, end color goldD
equals, start fraction, 1, divided by, 3, end fraction, dot, start color blueD, 12, end color blueD, minus, 1, minus, start fraction, 1, divided by, 2, end fraction, dot, start color goldD, 6, end color goldD, space, space, space, space, space, space, space, space, R, e, e, m, p, l, a, z, a, space, start color blueD, a, end color blueD, space, c, o, n, space, start color blueD, 12, end color blueD, space, y, space, start color goldD, b, end color goldD, space, c, o, n, space, start color goldD, 6, end color goldD, point
equals, 4, minus, 1, minus, 3
equals, 0

# Ahora, practiquemos

Evalúa start fraction, 3, divided by, 2, end fraction, y, minus, 3, plus, start fraction, 5, divided by, 3, end fraction, z cuando y, equals, 4 y z, equals, 3.

Evalúa 13, minus, 0, point, 5, w, plus, 6, x cuando w, equals, 10 y x, equals, start fraction, 1, divided by, 2, end fraction.