18X+3X-3=18-2(2X+1)
2个回答
18x+3x-3=18-4x-2
21x+4x=16+3
25x=19
x=19/25
相关问题
18x+2(2x+1)=18-3(x+1)
1.(2/18-3/18-1/18)X36 2.(1/4-1/2-1/8)X128 3.[9X(-4)]X(-1/4)
(X-X*20%-18-(X-X*20%-18)*10%=X*1/2-3(过程)
3(x+2)-4(x-1)+2(3x-1)-18=0
3(x+2)-4(x-1)+2(3x-1)-18=0
x/(x+3)-18/(x^2)-9=1
(4x+18)/(3x+1)=2
(x-3)(x-2)+18=(x+9)(x+1)
求x^2-18x-100的范围,-3x^2-18x?