4x+2.5(x+0.85)=13.5
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4x+2.5(x+0.85)=13.54x+2.5(x+0.85)=13.54x+2.5(x+0.85)=13.54x+2.5(x+0.85)=13.54x+2.5x+2.5×0.85=13.516x
4x+2.5(x+0.85)=13.5
4x+2.5(x+0.85)=13.5
4x+2.5(x+0.85)=13.5
4x+2.5(x+0.85)=13.5
4x+2.5x+2.5×0.85=13.5
16x+10x+8.5=54
26x=45.5
x=1.75
1.75
4x+2.5x+2.125=13.5
6.5x=11.375
x=1.75
4x+2.5x+2.5×0.85=13.5
6.5x+2.125=13.5
6.5x=11.375
x=1.75
4x+2.5(x+0.85)=13.5
4(x-0.85)+2.5x=13.5的解
4X+0.5X=13.5X
x+x-2.5+x-4=85
4x+2.5x*(x十0.85)=13.5 方程的解
2x+3.6*2=12.4 3(x+3.6)=18.6 x+3.5x=13.5 27x-4x=34.5 3x+2.8=4.3 12x-24=6 3x+9=10.5 5x+1.2=4.7 3*1.5+2x=11.55.4+1.8x=6.3 4.4x-2.7x=5.78 2.5x-3.6=6.4 2x+3.6*2=12.4 3(x+3.6)=18.6 x+3.5x=13.5
x+1.5x=7500 x-0.85x=3 4x-1.2=74
13.5x+9x-2.5x=210解方程
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
9^x+4^x=2.5*6^x
4-x=2(-0.5x²+2.5x-2)
2.5x-4x(2000-x)=1100
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
4x-2.5=1.8.x=?
方程:10.5{x-4}=2.5x
3.5X+2.5(14-X)=4
4x-15=2.5x
10.5(x-4)=2.5x