(1+2x)÷3=x-1 120÷x-120÷1.5x=8
2个回答
(1+2x)÷3=x-1
两边乘3
1+2x=3x-3
3x-2x=1+3
x=4
120÷x-120÷1.5x=8
120÷x-80÷x=8
40÷x=8
x=40÷8
x=5
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6x+5x(1+120%)÷(6+5)=75
1.x+4÷x+1=x-2÷x-3 2.2x-3÷x+5÷3-2x=4.
x/8+x÷4/3=21 x÷3又1/3-1/5x=20 2/3x+x÷2/3=4/5
4/3x÷6/1=8的计算过程4×2/1÷x=10 14/5x=9/5 x÷3/2=8/5 2/1x÷5/1=10 5/
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解方程 (X+120)÷100=(X-120)÷80