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x一9/2等于6/5

x一9/2=6/5 x=9/2+6/5 ⅹ=4.5+1.2 ⅹ=5.7

5/9比2/3x等于6/5 解:2/3x*6=5/9*5 4x=25/9 x=25/9÷4 x=25/36

x=1/9+5/6 =2/18+15/18 =17/18

【采纳是一种美德】

5/9x=5/6+2/3 5/9x=9/6 x=81/30 x=2又30分之21

7/9 X=5/6-2/9 7/9 X =33/54 X=33/54 X 9/7 X=11/14

3/2:9/5=x:6 3/2 *6=9/5 *x x=5

=9/10除以[1/2乘13/15] =9/10除以13/30 =27/13

等于2-54×(6/5-1/9)=2-54×49/45=2-294/5=-284/5

(9/10)X( 5/9 )=1/2=(1又5/6)÷(3又3分之2)=5:(10)=百分之50

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