Help me solve an equation, more urgent! (1000 × (1 + x) - 500) × (1 + x) = 660

Help me solve an equation, more urgent! (1000 × (1 + x) - 500) × (1 + x) = 660

1000×(1+x)-500)×(1+x)=660
1000+1000x-500-500x=660
500x=660-500
500x=160
x=8/25