Question

51-(2660:76+x):23=28
[100+x:75-1]·35>=275
{[(a+5):4+80]:5+5}·4=100

Answer 1

51-(2660:76+x):23=28
(2660:76+x):23=51-28
(2660:76+x):23=23
(2660:76+x)=23x23
2660:76+x=529
35+x=529
x=529-35
x=494

{[(a+5):4+80]:5+5}·4=100
{[(a+5):4+80]:5+5}=100:4
[(a+5):4+80]:5+5=25
[(a+5):4+80]:5=25-5
[(a+5):4+80]:5=20
[(a+5):4+80]=20x5
(a+5):4+80=100
(a+5):4=100-80
(a+5):4=20
a+5=20x4
a=80-5
a=75

[100+x:75-1]·35>=275 ???? verifica enuntul