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1/8+2/15+7/8脱式计算怎么算

1/8+2/15+7/8=1/8+7/8+2/15=1+2/15=1又2/15----------------------------------------------------------

1/8+2/15+7/8=1/8+7/8+2/15=1+2/15=1又15分之2

1/8 2/15 7/8脱式计算1/8 2/15 7/8=(1/8+7/8)+2/15=1+2/15=17/15

1/4+1/3+1/6=3/45/8-3/10-1/4 = 3/2019/30-3/10-1/5= 2/154/5-1/3-1/4 = 13/6013/14-2/7-1/2= 1/714又5/7-2又1/2-3又3/14 =95/9+(3/5-1/2)= 59/901/10+3/8-1/5= 7/403/5-(2/15+1/3=2/15

5-7/15-8/15=5-(7/15+8/15)=5-1=4

8*7/15+7/15÷8=8*7/15+7/15*1/8=7/15*(8+1/8)=7/15*65/8=105/24=35/8

8/15+2/5脱式计算解:根据通分的运用,原式=8/15+6/15=14/15

=7/8*(7/15+13/15)=7/8*20/15=7/8*4/3=7/6

(1)7*8+23 =56+23,=79;(2)(51-23)÷7=28÷7,=4;(3)48+4*6=48+24,=72;(4)63÷(36-29)=63÷7,=9;(5)86-6*9=86-54,=32;(6)(36+45)÷9=81÷9,=9.

9/13/8+1/8*7/13 =9/13*1/8+1/8*7/13 =1/8*(9/13+7/13) =1/8*16/13 =2/13 5/8:x=3:16 3x=5/8x16 3x=10 x=10/3 x+1/4x-4=32 x+x/4=32+4 5x/4=36 x=36x4/5 x=144/5 1/4=0.75/x x=4x0.75 x=3 1.4x- 0.6=7.8 1.4x=0.6+7.8 1.4x=8.4 x=8.4/1.4 x=6

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