解方程5x÷1/4=14/7 (3x-5)X45%=18 x÷1/3-2x=18 5x-(1/2x+16)=24

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解方程5x÷1/4=14/7 (3x-5)X45%=18 x÷1/3-2x=18 5x-(1/2x+16)=24
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解方程5x÷1/4=14/7 (3x-5)X45%=18 x÷1/3-2x=18 5x-(1/2x+16)=24
解方程5x÷1/4=14/7 (3x-5)X45%=18 x÷1/3-2x=18 5x-(1/2x+16)=24

解方程5x÷1/4=14/7 (3x-5)X45%=18 x÷1/3-2x=18 5x-(1/2x+16)=24
5x÷1/4=14/7
5X=1/4*14/7
5X=1/2
X=1/10
(3x-5)X45%=18
3X-5=18/45%=40
3X=45
X=15
x÷1/3-2x=18
X*3-2X=18
X=18
5x-(1/2x+16)=24
5X-1/2X-16=24
5X-1/2X=40
10X-X=80
9X=80
X=80/9