efectuati:
207 x 9 - (19^2 + 3^2) : 74 + 2296 : 41
5 x 230 - 7 x (512 : 32 + 2^2) + 4687 : 43
[ 493 : 17 - (128 : 2^3 + 224 :8) : 22] : 27 - 1
sa clarific, ^ inseamna puterea
2^2 = 2 la puterea a doua
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Răspuns:
207 × 9 - (361 +9) : 74 + 2296 :41 =1914
207 × 9 - 370 : 74 + 2296 : 41 =
1863 - 5 + 56 =
1858 + 56 = 1914
5×230-7×(16+4)+4687:43=1119
5×230-7×20+4687:43=
1150 - 140 + 109 =
1010 + 109 =1119
[ 493 :17-(128:8 +224:8):22]:27-1=0
[ 493:17 - ( 16 + 28) : 22] : 27 - 1 =
( 493 : 17 - 44 : 22 ) : 27 - 1 =
(29 - 2 ) : 27 - 1 =
27 :27 - 1 =
1 -1 = 0