一又九分之二除以32又五分之二减括号32.4减三分之一乘以0.25括起来乘以12等于？
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（1+2/9）÷（32+2/5）-（32.4-1/3x0.25）x12
=11/9÷162/5-（32.4-1/3x1/4）x12
=11/9÷162/5-（32.4-1/12）x12
=11/9÷162/5-32.4x12+1/12x12
=11/9x5/162-32.4x12+1
=55/1458-388.8+1
=55/1458-(388.8-1)
=55/1458-387.8
=55/1458-1939/5
=275/7290-2827062/7290
=-2826787/7290
=11/9÷162/5-（32.4-1/3x1/4）x12
=11/9÷162/5-（32.4-1/12）x12
=11/9÷162/5-32.4x12+1/12x12
=11/9x5/162-32.4x12+1
=55/1458-388.8+1
=55/1458-(388.8-1)
=55/1458-387.8
=55/1458-1939/5
=275/7290-2827062/7290
=-2826787/7290
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