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500-[(16x18-192:F):7+14X5+10]:4x7+5=299

Răspuns :

500-[(288-192:F):7+70+10]:4×7+5= 299
[(288-192:F):7+80]:4×7+5 = 500-299
[(288-192:F):7+80]:4×7 = 201-5
[(288-192:F):7+80]:4 = 196:7
(288-192:F):7+80 = 28×4
(288-192:F):7 = 112-80
288-192:F = 32×7
192:F = 288-224
192:F = 64
F = 192:64
F = 3