Răspunsuri

2014-01-14T19:23:48+02:00
(2*8+6*8)/8 = a  (16+48)/8=a  64/8=a  8=a                                                                                     
(4+27/b)=1  4+27/b=1  3+27b=0 


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2014-01-14T19:42:49+02:00
(2*8+6*8)/a=8 => (16+48)/a=8 => 64/a=8 => 8/a=1 => a=8
(36-20/a*9)/8=0 => [(36*9*a-20)/9a]/8=0 => (324a-20)/9a=0 => 324a-20=0 => a=20/324 => a=5/81
(4+27/b)=1 => 3+27/b=0 => (3b+27)/b=0 => 3b+27=0 => b=-27/3=-9
1+2*3+(a-4)/5-9=0 => 1+6+(a-4)/5-9=0 => 7+(a-4-45)/5=0 => (35+a-49)/5=0 => a-14=0 => a=14
5+6*7-8*(y-9)-76/2=1 => 5+42-8*y+72-38=1 => -8y+47+34=1 => -8y+81=1 => 8y=80 => y=10
i-mi cer scuze,dar la final 8y ,nu trebuie sa fie 8 cu *,pentru ca inca nu am invatat asa ,eu sunt clasa a 3-a .Multumesc
5+6*7-8*(y-9)-76/2=1 => 5+42-8*y+72-38=1 => -8*y+47+34=1 => -8*y+81=1 => 8*y=80 => y=10