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a fost răspuns

Aflati numarul x,numar natural,stiind ca :
{10'3+10'2×[10+(5'2-x)÷5]}÷20=6

Ps: ' inseamna la puterea

Răspuns :

{10^3+10^2[10+(5^2-x):5]}=6×20
10^2[10+(5^2-x):5=120-1000
10^2[10+(5^2-x)]=(-880)×5
10+(5^2-x)=(-4400):100
10+25-x=-44
35-x=-44
-x=-44-35
-x=-79|(-1)
x=79€N

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