(1+0.56+0.67)*(0.56+0.67+78)-(1+0.56+0.67+78)*(0.56+0.67)谢谢了,

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(1+0.56+0.67)*(0.56+0.67+78)-(1+0.56+0.67+78)*(0.56+0.67)谢谢了,(1+0.56+0.67)*(0.56+0.67+78)-(1+0.56+0.

(1+0.56+0.67)*(0.56+0.67+78)-(1+0.56+0.67+78)*(0.56+0.67)谢谢了,
(1+0.56+0.67)*(0.56+0.67+78)-(1+0.56+0.67+78)*(0.56+0.67)谢谢了,

(1+0.56+0.67)*(0.56+0.67+78)-(1+0.56+0.67+78)*(0.56+0.67)谢谢了,
=(1+0.56+0.67)(0.56+0.67+78-0.56-0.67)-78*0.56*0.67=(1+0.56+0.67-0.56-0.67)*78=78