Question

Scrieti in caiete si puneti paranteze,asfel incat dupa fiecare calcul sa obtineti rezultatele date:a)2x5+25x5-2=108;b)2x5+25x4-2=208;c)25x4-2+2=80;d)2x5+25x4-2=120;e)2x5+25x4-2=138;f)13+13+13:3=13

Answer 1

b).
2x5+25x4-2=120
2x(5+25)x(4-2)=120
2x30x2=120
60x2=120
120=120

c).
2x5+25x4-2=208
2x(5+25x4)-2=208
2x(5+100)-2=208
2x105-2=208
210-2=208
208=208

d).
25x4-2+2x5=80
(25x4)-[(2+2)x5]=80
100-(4x5)=80
100-20=80
80=80

e).
13+13+13:3=13
(13+13+13):3=13
39:3=13
13=13

Answer 2

 a). (2*5+25*4)-2=108
 b).2*(5*25)*(4-2)=120
 c).2*(5+25*4)-2=208
 d).(2*5+25)*4-2=138
 e).(25*4)-[(2+2)*5]=80
 f).(13+13+13):3=13

sper ca te-am ajutat!!!