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cum se afla necunoscutul din fata ....x 4 / 5 / 4 x 8 / 4 = 4

Răspuns :

x*4:5:4*8=16(4*4)
x*4:5:4=2(16:8)
x*4:5=8(2*4)
x*4=40(8*5)
x=10(40:4)
x*4:5:4*8=16(4*4)
x*4:5:4=2(16:8)
x*4:5=8(2*4)
x*4=40(8*5)
x=10(40:4)