Question

4-{-2+[-3-(2-x)+1]-5}=3 va roggg ofer 50 de puncte ​

Answer 1

Răspuns:

4-[-2+(-3-2+x+1)-5]=3

4-(-2-4+x-5)=3

4+2+4-x+5=3

-x=3-5-4-2-1

-x=-9

x=9