Question

ex 14 punctul c si d va rog repede dau de toate​

Answer 1

Răspuns:

c)432.171

d)200

Explicație pas cu pas:

c)[(4×72-72:8):a+35]×6+12=276

[(4×72-72:8):a+35]:6=276-12

[(4×72-72:8):a+35]:6=264

(4×72-72:8):a+35=264×6

(4×72-72:8):a+35=1.584

(4×72-72:8):a=1584-35

(4×72-72:8):a=1.549

(288-9):a=1.549

279:a=1.549

a=1.549×279

a=432.171

d) numărul pe care trebuie să-l aflăm îl vom nota y

(y:2)+(3×123-4×53)=257

(y:2)+(369-212)=257

(y:2)+157=257

y:2=257-157

y:2=100

y=100×2

y=200