Question

简便运算 15.6除以2.6+15.6除以2.4

Answer 1

您好：

15.6除以2.6+15.6除以2.4
=15.6x5/13+15.6x5/12
=12x1.3x5/13+12x1.3x5/12
=12x0.5+1.3x5
=6+6.5
=12.5

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Answer 2

15.6/2.6 + 15.6/2.4
=15.6 *(1/2.6 + 1/2.4)
=15.6*5/(2.6*2.4)
=78/2.6* 1/2.4
=30/2.4
=10/0.8
=100/8
=12.5

Answer 3

15.6÷（2.6+2.4）=15.6÷5=3.12