作业帮6.8x-16.1=20-2.7x
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6.8x-16.1=20-2.7x
6.8x-16.1=20-2.7x
6.8x-16.1=20-2.7x
6.8x-16.1=20-2.7x
6.8x+2.7x=16.1+20
9.5x=36.1
x=36.1÷9.5
x=3.8
x=3.8
X=3.8
6.8x+2.7x=16.1+20
9.5x=36.1
x=36.1÷9.5
x=3.8
6.8x-16.1=20-2.7x
求x 的值.x +3.5x =9.9;4.25x -x =4.55;10x -2.7x =58.4;6.8x +3.2x =100
13x-6.8x+x=46.
（X+X)+(X-X)+(X*X)+(X/X)=100
x-20%x=45+20%x
x+x²=20,x=?
x - 15%x+20%x=23.
x-0.3x-0.5x=20
0.88（X+20%X)=X+84
X-30%X+8-X=20
x*x*(1/4)=20x
x(x-20)=x+10
30%x=50%x-20x
6.8x-x=20.3
X+0.8X=2.7
20%x+20%x×30%x-20%x=4.5
(x+20)+x=60+x-(x+20)
(X+X*20%)-[(1200-X)-(1200-X)*20%]=40%