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第1个回答 2020-10-08
5.4×7.8-2.2×4.6
=(10-4.6)×7.8-2.2×4.6
=10×7.8-4.6×7.8-2.2×4.6
=78-4.6×(7.8+2.2)
=78-4.6×10
=78-46
=32
=(10-4.6)×7.8-2.2×4.6
=10×7.8-4.6×7.8-2.2×4.6
=78-4.6×(7.8+2.2)
=78-4.6×10
=78-46
=32
第2个回答 2023-02-22
5.4x7.8-2.2x4.6
=5.4*7.8-(10-7.8)*4.6
=5.4*7.8-10*4.6+7.8*4.6
=7.8*(5.4+4.6)-10*4.6
=7.8*10-10*4.6
=10*(7.8-4.6)
=10*3.2
=32
=5.4*7.8-(10-7.8)*4.6
=5.4*7.8-10*4.6+7.8*4.6
=7.8*(5.4+4.6)-10*4.6
=7.8*10-10*4.6
=10*(7.8-4.6)
=10*3.2
=32