Question

Scrieti in caiete si puneti paranteze astfel incat dupa fiecare calcul..sa obtineti reultatele date.
b)2x5+25x4-2=120
c)2x5+25x4-2=208
e)25z4-2+2x5=80
f)13+13+13:3=13
URGENT,VA ROG!!!

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