(1/2-1/3)×3/4÷1/4
(1/2-1/3)×3/4÷1/4
=1/2×3/4÷1/4-1/3×3/4÷1/4
=1/2×(3/4÷1/4)-1/3×(3/4÷1/4)
=1/2×4-1/3×4
=2-4/3
=2/3
解一
(1/2-1/3)×3/4÷1/4
=1/6×3/4×4/1
=1/8×4
=1/2
解二
(1/2-1/3)×3/4÷1/4
=(1/2-1/3)×(3/4÷1/4)
=(1/2-1/3)×3
=1/2×3-1/3×6
=3/2-1
=1/2
(1/2-1/3)×3/4÷1/4
=(3/6-2/6)×(3/4÷1/4)
=1/6x(3/4x4)
=1/6x3
=1/2
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