(2加3.15加5.87)乘(3.15加5.87加7.32)减(2加3.15加5.87加7.32)乘(3.15加5.87)

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(2加3.15加5.87)乘(3.15加5.87加7.32)减(2加3.15加5.87加7.32)乘(3.15加5.87)(2加3.15加5.87)乘(3.15加5.87加7.32)减(2加3.15加

(2加3.15加5.87)乘(3.15加5.87加7.32)减(2加3.15加5.87加7.32)乘(3.15加5.87)
(2加3.15加5.87)乘(3.15加5.87加7.32)减(2加3.15加5.87加7.32)乘(3.15加5.87)

(2加3.15加5.87)乘(3.15加5.87加7.32)减(2加3.15加5.87加7.32)乘(3.15加5.87)
A=2 B=3.15 C=5.87 D=7.32
(A+B+C)(B+C+D)-(A+B+C+D)(B+C)
=(A+B+C)(B+C)+(A+B+C)D-(A+B+C)(B+C)-(B+C)D
=(A+B+C)D-(B+C)D
=AD
=2X7.32
=14.64