Question

[(b+5)×5+5]×5+5=205​

Answer 1

[(b+5)•5+5]•5+5=205

[(b+5)•5+5]•5=205-5

[(b+5)•5+5]•5=200

[(b+5)•5+5]=200:5

[(b+5)•5+5]=40

(b+5)•5=40-5

(b+5)•5=35

b+5=35:5

b+5=7

b=7-5

b=2

Answer 2

Răspuns:

B=2

Explicație pas cu pas:

(5b+30)*5+5=205

(5b+30)*5+5=205

25b+150+5=205

25b+155=205

25b=205-155

25b=50

B=50:25=2