Question

pfv 2 quintos igual a 4+x

Answer 1

2/5=4+x => 2=5(4+x) => 2=20+5x => x=-18/5

Answer 2

2/5 = 4 + x 

2 = ( 4 + x) . 5

2 = 20 + 5x 

2 - 20 = 5x 

x = -18/5                     ok