Question

Afla-l pe x din egalitate 10+10:ACOLADA SI PARANTEZA MARE 10+10X(X-10)SI PARANTEZA MARE :10-10 ACOLADA=11

Answer 1

10+10/{[10+10*(x-10)]/10-10}=11
10/{[10+10*(x-10)]/10-10}=11-10=1
[10+10*(x-10)]/10-10=10*1=10
[10+10*(x-10)]/10=10+10=20
10+10*(x-10)=20*10=200
10*(x-10)=200-10=190
x-10=190/10=19
x=19+10
x=29