Salut!
[(544+a:6)•5-2670]=167-72
(544+a:6)•5-2670=95
(544+a:6)•5=2670+95
(544+a:6)•5=2765
544+a:6=2765:5
544+a:6=553
a:6=553-544
a:6=9
a=6•9
a=54
100•[386:2+(a•25-810÷5)]=23100
193+(a•25-162)=23100:100
193+(a•25-162)=231
a•25-162=231-193
a•25-162=38
a•25=38+162
a•25=200
a=200:25
a=8
32÷8+3×(250:5-x:2)=280
4+3×(50-x:2)=280
3×(50-x:2)=280-4
3×(50-x:2)=276
50-x:2=276:3
50-x:2=92
Sper ca te am ajutat! succes! coroana?
