秒杀!.3x+5=2x-3,则3x-()=-5+()我写的是,3x-2x-3=-5+(-3),错了,正确答案是否是将我的式子的左边的-3去掉?如果是,那么为什么右边减去了3,而左边不用?
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/10 10:39:52
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填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x(x-2)-2x(x+1)-3x(x-5) 其中x=负½
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
秒回答秒采纳 sin^2x-2sinxcosx-3cos^2x=0秒回答秒采纳sin^2x-2sinxcosx-3cos^2x=0
高一方程速度! 秒回答秒采纳 sin^2x-2sinxcosx-3cos^2x=0高一方程速度! 秒回答秒采纳sin^2x-2sinxcosx-3cos^2x=0
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
x^5-2x^3+x=?
写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4
已知(x-2)(x-5)/(x-3)(x-4)=x+1/x+2,则x=
若x(3x-4)+2x(x+7)=5x(x-7)+90,则x=
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7