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Calculati :2,6×{5,8+6,25[9,3-3,1 (8,76-2×2,88)]}

Răspuns :

2,6×{5,8+6,25[9,3-3,1× (8,76-2×2,88)]} =
=
2,6×{5,8+6,25[9,3-3,1× (8,76-5,76)]}
=2,6×[5,8+6,25(9,3-3,1 ×3)] =
=2,6×[5,8+6,25(9,3-9,3)] =
=2,6×(5,8+6,25×0) =
=2,6×(5,8+0) =
=2,6×5,8 =
=15,08