3x+4(x+5.5)=78,
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3x+4(x+5.5)=78,3x+4(x+5.5)=78,3x+4(x+5.5)=78,3x+4(x+5.5)=783x+4x+22=787x=78-227x=56x=56÷7x=83x+4(x+5
3x+4(x+5.5)=78,
3x+4(x+5.5)=78,
3x+4(x+5.5)=78,
3x+4(x+5.5)=78
3x+4x+22=78
7x=78-22
7x=56
x=56÷7
x=8
3x+4(x+5.5)=78
3x+4x+22=78
7x=78-22
7x=56
x=8
3x+4x+4*5.5=78
7x=56
x=8
0.32.6333
652323236335353
568+68539+69 =14
3x+4(x+5.5)=78,
3x+4(x+5.5)=78,
一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*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?
2x+4+x+(x+2)/3=78这条题咋解?
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4*(5.5+x)+3x=78用方程解
化简 [3x/(x+2)-x/(x=2)]÷x/(x^2-4)化简 [3x/(x+2)-x/(x-2)]÷x/(x^2-4