15.37x7.88-9.37x7.88-9.37x7.88-15.37x2.12+9.37x2.12最简解题法

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15.37x7.88-9.37x7.88-9.37x7.88-15.37x2.12+9.37x2.12最简解题法

15.37x7.88-9.37x7.88-9.37x7.88-15.37x2.12+9.37x2.12最简解题法
15.37x7.88-9.37x7.88-9.37x7.88-15.37x2.12+9.37x2.12最简解题法

15.37x7.88-9.37x7.88-9.37x7.88-15.37x2.12+9.37x2.12最简解题法
15.37x7.88-9.37x7.88-15.37x2.12+9.37x2.12
=(15.37-9.37)x7.88-(15.37-9.37)x2.12
=6×7.88--6×2.12
=6×(7.88-2.12)
=6×5.76
=34.56