1、 4x-2(100-x)=40
7个回答
4x-200+2x=40
6x=240
x=40
4x-100+2x=20
6x=120
x=20
12x-156=10x+30
2x=186
x=93
相关问题
2/3x=(x-40)x40%+100
1×6+2x+3(40-6-7-x)+4×7=100
解方程: 40%x-20%x=1 (1-25%)x=72 17%x-100=240 4x+40%x=176 x÷55%=
1/40)*4*x+(1/40)*8*(x+2)=1
1x1+0x1+2x2+1x2+3x3+2x3+4x4+3x4……99x99+98x99+100x100+99x100
2x+x.2+x.4+1=100
x-(2/3x-1)-{40%(x-2/3x-1)+1}=4
1/4x+5+1/2【x-(1/4x+5)】-5+40=x
解方程;x-1/3x-40%x=100
-4x^3+40x^2y-100xy^2.9(m+2n)^2-4(2m-n)^2.(-1/2)^2013+(1/2)^2