Question

Aflați valoarea din lui X din egalitatea:
10+10÷{[10+10×(X-10)]×10-10}=11

Answer 1

10+10÷[(10+10x-100)×10-10)=11 =>
10+10÷[(-90+10x)×10-10)=11 =>
10+10÷(-900+100x-10)=11 =>
10+10÷(-910+100x)=11 =>
10+ 10/-910+100x=11 =>
10+10/10(-91+10x)=11 =>
10+1/-91+10x=11 =>
1/-91+10x=11-10 =>
1/-91+10x=1 =>
1=-91+10x =>
-10x=-91-1 =>
-10x=-92 =>
x=92/10 =>
x=46/5