7x÷3分之1等于6分之5

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7x÷3分之1等于6分之5
7x÷3分之1等于6分之5

7x÷3分之1等于6分之5
7x÷(1/3)=5/6
21x=5/6
x=5/6*1/21
=5/126

不懂~~~~~~~~

7x/(1/3)=5/6
7x*3=5/6
21x=5/6
x=5/(6*21)
x=5/126

7x÷(1/3)=5/6
21x=5/6
x=5/6*1/21
=5/126

7/1/3=6/5
5/3=7/6X
X=5/3/7/6
X=10/7

7x/(1/3)=5/6
7x*3=5/6
21x=5/6
x=5/(6*21)
x=5/126

7x*3=5/6
x=5/126

7x÷(1/3)=5/6
7x=5/6÷1/3
7x=5/6*3
X=5/14