Răspuns :
(24*8+128+4b):12=29
(192+128+4b):12=29
(320+4b):12=29
320+4b=12*29
320+4b=348
4b=348-320
4b=28
b=28:4
b=7
Sper că te-am ajutat!
(72:3×8+16×8+2×b×2):12=29
(24×8+128+4×b):12=29
(192+128+4×b):12=29
(320+4×b):12=29
320+4×b=12×29
320+4×b=348
4×b=348-320
4×b=28
b=28 : 4
b=7