a*9=b
[(b-75):8+3]:2*400=1200
consideram ca fiind datele problemei
paranteza patrata o notezi cu c.
c:2*400=1200
c:2=1200:400. c:2=30. c=60
(b -75):8+3=60
notezi paranteza cu f
f:8+3=60
f:8=60-3. f:8=57 f=57*8 f=456
b -75=456. b=456+75. b=531
a*9=531. a=531:9. a=58 .org ca te ajuta