Question

Resolver: 2/5x+4=16/25x+30

Answer 1

2(25x+30)= 16(5x+4)
50x +60 = 80x + 64
50x-80x = 64 - 60
- 30x = 4 (.-1)
30x = -4 (:2)
15x = -2
x = -2/15

Answer 2

$\frac{2}{5x+4} = \frac{16}{25x+30} \\ \\ 2*(25x+30)=16*(5x+4) \\ 50x+60=80x+64 \\ 50x-80x=64-60 \\ -30x=4 \\ x= \frac{4}{-30} \\ x= -\frac{2}{15}$