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(8×5+2-2×6)-(2×7-13+5)×2

Răspuns :

(8×5+2-2×6)-(2×7-13+5)×2=
(40+2-12)-(14-13+5)×2=
(42-12)-(1+5)x2=
30-6x2=
30-12=
18

(40+2-12)-(14-8)×2=
=30-6×2=
=30-12=
=18.