Question

Halla el valor x en cada simplificacion
1. 40/32 = 5/x
2. 180/450 = x/5
3. 12/1728 = x/144
4. 13/x = 1/13

Answer 1

$1) \frac{40}{32} = \frac{5}{x} \\ x = \frac{32 \times 5}{40} = \frac{160}{40} = 4$

$2) \frac{180}{450} = \frac{x}{5} \\ x = \frac{180 \times 5}{450} = \frac{900}{450} = 2$

$3) \frac{12}{1728} = \frac{x}{144} \\ x = \frac{12 \times 144}{1728} = \frac{1728}{1728} = 1$

$4) \frac{13}{x} = \frac{1}{13} \\ x = \frac{13 \times 13}{1} = 169$