Question

12+3b/18+2a=2/3
a/b=?

Answer 1

12+3b/18+2a=2/3

3(12+3b)=2(18+2a)

36+9b=36+4a

9b=4a

a/b=9/4

Answer 2

Răspuns

Explicație pas cu pas:

( 12 + 3 b ) / ( 18 + 2 a ) = 2 / 3

⇒  3 ( 12 + 3 b ) = 2 ( 18 + 2 a )

    36 + 9 b = 36 + 4 a  ⇒   4 a = 9 b  ⇒  a / b = 9 / 4