问题 填空题

算式10-10.5÷[5.2×14.6-(9.2×5.2+5.4×3.7-4.6×1.5)]得值为______.

答案

10-10.5÷[5.2×14.6-(9.2×5.2+5.4×3.7-4.6×1.5)],

=10-10.5÷[5.2×14.6-9.2×5.2-5.4×3.7+4.6×1.5],

=10-10.5÷[5.2×(14.6-9.2)-5.4×3.7+4.6×1.5],

=10-10.5÷[5.2×5.4-5.4×3.7+4.6×1.5],

=10-10.5÷[5.4×(5.2-3.7)+4.6×1.5],

=10-10.5÷[5.4×1.5+4.6×1.5],

=10-10.5÷[1.5×(5.4+4.6)],

=10-10.5÷15,

=10-0.7,

=9.3.

故答案为:9.3.

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