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a fost răspuns

1+2×[3+4×(5+6×7)]-8×9

Răspuns :

1+2 x[3+4 x(5+42)]-72=
1+2 x(3+4 x47)-72=
1+2 x(3+188)-72=
1+2 x 191-72=
1+382-72=
383-72=311
Carmenbadea34
1+2×[3+4×(5+42)]-8×9
1+2×(3+4×47)-8×9
1+2×(3+188)-8×9
1+2×191-8×9
1+382-72
383-72=311


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