Question

12 sobre 15 igual a X sobre 30

Answer 1

12/15=x/30

multiplica cruzado

15x=12.30

15x=360

x=360/15

x=24

Answer 2

$\frac{12}{15} =\frac{X}{30} \\\\\frac{4}{5} =\frac{X}{30} \\\\120=5x \\\\5x=120 \\\\x=24$