5x ( 1+5 ) = 650 <=> 5x = 25 <=> x = 2
**** cho mk nhá ^^
) 5x + 5x+2 = 650
5x ( 1+52 ) = 650
5x .26 = 650
5x = 25
5x = 52
=> x = 2
) 5x + 5x+2 = 650
5x ( 1+52 ) = 650
5x .26 = 650
5x = 25
5x = 52
=> x = 2
li ke cho mik nha
5x + 25.5x = 650
26.5x = 26.25
5x = 25 = 52
x = 2