Question

1932:{[(21×b-33)-4]×20-16}=23

Va rog sa fie corect!!​

Answer 1

Răspuns:

1932:{[(21b-33)-4]x20-16}=23

[(21b-33)-4]x20-16=1932:23

[(21b-33)-4]x20-16=84/+16

[(21b-33)-4]x20=100/:20

(21b-33)-4=5/+4

21b-33=9/+33

21b=42/:21

b=2