1.2(x+1)>4 2.7x-9>9x+7
1个回答
2(x+1)>4
x+1>2
x>1
7x-9>9x+7
9x-7x
相关问题
5/35 X 4/9 + 4/7 X 6/9 1.2/9 - 2/9 X 3/10 2.5/35 X 4/9 + 4/7
2(x-2)+3(4x-1)=9(x-1)+7
解方程.[1/2]+[1/4]+x=[9/4]9x-[7/5]=[8/5][7/10]+[1/2]-x=[2/3].
6.9x-4.1=9.1 7.2-0.2x=6.2
x-([1/3]+[2/3])=[7/12] 2x+[7/9]=[7/9] 15x-4.5×2=51 7x+3x+26=
-7-9x=2x*-7 求X值2.((x+y)/4)-((x-y)/3)=1 ((x+y)/4)+((x-y)/2)=9
1:7x+2y-z=7 2:6x-y+z=7 3:4x+3y+z=9 1:9x+4y+z+10 2:-9X+2y+3z=
2(x-20)+3(4x-1)=9(x-1)+7
2-x/x²-9(1+2x-7/x²-4x+4)÷1/x+3
2.1X+7.9X=6.9