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(36:6:3×9:6+25:5×9+8×9)-(64:8:4×6+6×4:8×7+56:8)

Răspuns :

(36:6:3×9:6+25:5×9+8×9)-(64:8:4×6+6×4:8×7+56:8)=
(12:3×9:6+5×9+72)-(8:4×6+24:8×7+7)=
(4×9:6+45+72)-(4×6+3×7+7)=
(36:6+45+72)-(24+21+7)=
(6+45+72)-52=
123-52=71