tolong dijawab dengan cara y kak
[tex] \frac{x + 5}{6y} = \frac{6}{9} [/tex]
9( x + 5 ) = 6y.6
9x + 45 = 36y
9x = 36y - 45
----------------------- : 9
x = 4y - 5
x = 4.2,5 - 5
= 10 - 5 = 5
[tex] \frac{x}{y} = \frac{6}{3} \\ \frac{4y - 5}{y} = \frac{6}{3} [/tex]
3( 4y - 5 ) = 6y
12y - 15 = 6y
12y - 6y = 15
6y = 15
y = 2,5
x + y = 2,5 + 5 = 7,5
