Răspuns:
=35x7-4x(89-(300-84)÷3)=
=35x7-4x(89-216÷3)
=35x7-4x(89-72)
=35x7-4x17
=245-68=177
(220-(2xX-227)+13)÷20=1001-996
(220-(2xX-227 )+13)÷20=5
(220-(2xX-227) +13l0=20x5
(220-(2xX-227) +13)=100
(2xX-227)+13=220+100
(2xX-227) +13=320
(2xX-227) =320-13
(2xX-227) =307
2xX=307+227
2xX=534
X=534÷2
X=267
Sper ca te am ajutat
