作业帮(27-x)*2.4+3.6=100-20.8这道方程怎么解
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(27-x)*2.4+3.6=100-20.8这道方程怎么解
(27-x)*2.4+3.6=100-20.8这道方程怎么解
(27-x)*2.4+3.6=100-20.8这道方程怎么解
(27-x)*2.4+3.6=100-20.8
(27-x)*2.4=100-20.8-3.6
(27-x)*2.4=75.6
27-x=31.5
x=-4.5
(27-x)*2.4+3.6=100-20.8
27-x=（100-20.8）÷3.6
27-x=22
x=27-22
x=5
小学六年级下册数学解方程.. 要详细的.. 还要过程 都写下来...2x+3x=60 3.6x-2.8x=12 100x-x=198 18x+2x+60 5x+6x=12.1 6.6x-5x=8 4x-x=24 1.5x-x=1 1.9x+0.4x=9.2
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
（X+X)+(X-X)+(X*X)+(X/X)=100
2*(27+x+x)+2*(27+x+x)-38+27+x+x=147解方程
5x-4x=2*1.8,5x-2+3x=3.6,x+4x=20.3,8x+10-3x=30,10.5-0.5x+0.5=1,x+2x+5x=10,解方程,5x-4x=2*1.8,5x-2+3x=3.6,x+4x=20.3,8x+10-3x=30,10.5-0.5x+0.5=1,x+2x+5x=10,0.8x-0.2+1.2x=1.8,2.4x+0.6+1.6=8
1/X(X+1)+1/(X+1)(X+2)+1/(X+2)(X+3).+1/(X+99)(X+100)=
解方程：2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
1X+2X+3X…+98X+99X+100X=50500X X等于多少?
1x+2x+3x+4x+5x+6x+7x…+99x=100
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
100(X - 2) + 10X + 2X = 100*2X + 10X + X - 2 - 495
x+x^2+x^3+x^4+x^5+.+x^27=?
100×2x+10x+3x+216=100×3x+10×2x+x
设函数f(x)=(x-1)(x-2)...(x-100)(x>100),求F'(X)
f(x)=x(x-1)(x-2)…(x-99)(x-100),求f'(100)
解方程:x-2x+3x-4x+...+99x-100x=25