3(X一7)十5(X一4)=15怎么解,
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3(X一7)十5(X一4)=15怎么解,
![3(X一7)十5(X一4)=15怎么解,](/uploads/image/z/4747379-59-9.jpg?t=3%28X%E4%B8%807%29%E5%8D%815%28X%E4%B8%804%29%3D15%E6%80%8E%E4%B9%88%E8%A7%A3%2C)
3(X一7)十5(X一4)=15
3x-21+5x-20=15
8x-41=15
8x=56
x=7
3x-21+5x-20=15
8x-41=15
8x=56
x=7
3(X一7)十5(X一4)=15怎么解,
X十1十4/5X=1十7/8(X-1)十(X一1)怎么算
5x一x十14=20 4(x一3)=7(x一6)解方程
5x一3/4x平方一9一6x十9/4x平方一9十3x+15/4x平方9=?
3x十7x十5x一7x=17十18
(x十3)(x一3)十8>(x十5)(x一1)解不等式
1/(x^2一4x十3)十1/(x^2一8x十15)十1/(x^2-12x十35)十1/(x^2一16x十63)=
(7一2X十x平方)一(5十3X一2x平方)
x一5分之2x十1800=3分之2x(怎么解)
计算:6x2一(2x一1)(3x一2)十(x十2)(x一2)一x(x十7)这题怎么做?
1/2(2X十5)=4x十3/4一2一3x/8,解方程
解方程:x十y十Z=4,2x一y十Z=3,3x一2y一3Z=-5,