(2X+1)÷2×3+1=74/5X-(465-X)×2/3=201又1/3-1/40X=91又1/3-1/50X)×1/2
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(2X+1)÷2×3+1=74/5X-(465-X)×2/3=201又1/3-1/40X=91又1/3-1/50X)×1/2
(2X+1)÷2×3+1=7
4/5X-(465-X)×2/3=20
1又1/3-1/40X=91又1/3-1/50X)×1/2
(2X+1)÷2×3+1=74/5X-(465-X)×2/3=201又1/3-1/40X=91又1/3-1/50X)×1/2
(2X+1)÷2×3+1=7
(x+0.5)×3+1=7
3x+2.5= 7
x=1.5
4/5X-(465-X)×2/3=20
0.8x-310+x=20
22\15x=330
x=225
1又1/3-1/40X=(91又1/3-1/50X)×1/2
4/3-1/40X=274/3×1/2﹣1/50X×1/2
4/3-1/40X=274/6-1/100X
4/3-274/6=-1/100X+1/40X
X=-26600/9
就把括号去掉 然后将X的系数合并再解答啊
(2X+1)÷2×3﹢1=7
2X÷2×3﹢1÷2×3﹢1=7 3X=7-1-1÷2×3 3X=9/2 X=3/2
4/5X-(465-X)×2/3=20
4/5X-465×2/3+X×2/3=20 22/15X=20+465×2/3 22/15X=330 X=225
1又1/3-1/40X=(...
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就把括号去掉 然后将X的系数合并再解答啊
(2X+1)÷2×3﹢1=7
2X÷2×3﹢1÷2×3﹢1=7 3X=7-1-1÷2×3 3X=9/2 X=3/2
4/5X-(465-X)×2/3=20
4/5X-465×2/3+X×2/3=20 22/15X=20+465×2/3 22/15X=330 X=225
1又1/3-1/40X=(91又1/3-1/50X)×1/2
4/3-1/40X=274/3×1/2﹣1/50X×1/2 4/3-1/40X=274/6-1/100X 4/3-274/6=-1/100X+1/40X
3/200X=-266/6 X=-26600/9
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