Question

721:7-2x{25x17-17x23+[45:9+(23x5-109):2]x2}+1=​

Answer 1

Răspuns:

103-2×{425-391+[5+(115-109):2]×2}+1=

103-2×[34+(5+6:2)×2]+1=

103-2×(34+8×2)+1=

103-2×(34+16)+1=

103-2×50+1=103-100+1=3+1=4