Question

afla numarul necunoscut din expresiile
(72/3x8+16x8+2xbx2)/12=29

Answer 1

(24x8+128+4xb)/12=29
(192+128+4xb)/12=29
(320+4xb)/12=29
4x(80+b)/12=29
80+b/3=29 / multiplica ambele parti cu 3
80+b=29 /-80
b=-51