一元一次方程20道题初一上学期
5x+4=4x-3 3x+20=4x-25 0.6x=50+0.4x5x-4x=-3-4 3x-4x=-25-20 0.6x-0.4x=50
x=-7 -x=-45 0.2x=50
x=45 x=250
好拉我要睡觉拉不陪你完拉其实很简单的,漫漫来.别急啊.我不会打分号要不就玩难点的拉.不好意识啊!
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绛旓細x=32,y=36400-x=4(150-y)x:y=2:1绛旀锛歺=200,y=100x+y=9540%x+78%y=60&路95绛旀锛歺=45,y=503x+20=y4x-30=y绛旀锛歺=50,y=1706x+5y=-12x-3y=-5绛旀锛歺=-1,y=13x-2y=53x+2y=13绛旀锛歺=3,y=24x-5y=52x+3y=-25绛旀锛歺=-5,y=-52x+3y=-73x+2y=7绛旀锛...
绛旓細11*3x=60 x=20/11 8-y=2 y=-6 1.x+2=3 2.x+32=33 3.x+6=18 4.4+x=47 5.19-x=8 6.98-x=13 7.66-x=10 8.5x=10 9.3x=27 10.7x=7 11.8x=8 12.9x=9 13.10x=100 14.66x=660 15.7x=49 16.2x=4 17.3x=9 18.4x=16 19.5x=25 20.6x=36 21.8x=64 ...
绛旓細2(x-2)-3(4x-1)=9(1-x)11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x)3(x-7)-2[9-4(2-x)]=22 3/2[2/3(1/4x-1)-2]-x=2 2(x-2)+2=x+1 5x^2+3x+1=0 7x^2+x+12=0 2x^2+4x+4=0 8x^2+3x+1=0 5x^2+3x+2=0 2(x-2)-3(4x-1)=9(1-x)11x+64-2x...
绛旓細5锛圶+6锛=3锛4+X锛7(2x-1)-3(4x-1)=4(3x+2)-1;(5y+1)+ (1-y)= (9y+1)+ (1-3y);20%+(1-20%)(320-x)=320脳40 2(x-2)+2=x+1 2(x-2)-3(4x-1)=9(1-x)x/3 -5 = (5-x)/2 2(x+1) /3=5(x+1) /6 -1 (1/5)x +1 =(2x+1)/4 ...
绛旓細涓鍏冧竴娆℃柟绋锛堟湁绛旀锛1銆亁/4=-x/2+3 x/4+x/2=3 3x/4=3 x=4 2銆1/2锛坸*x-y锛+1/3锛坸-y*y锛+1/6锛坸*x+y*y锛=1/2x^2-1/2y+1/3x-1/3y^2+1/6x^2+1/6y^2 =2/3x^2-1/2y+1/3x-1/6y^2 3銆亁/4=-x/2+3 4銆亁/4+x/2=34 3x/4=34 x=34 4銆侊紙x...
绛旓細绗竴娆鍊掑嚭1/2a-4鍗冨厠,杩樺墿涓1/2a+4鍗冨厠 绗簩娆″掑嚭3/4脳锛1/2a+4锛+8/3=3/8a+17/3鍗冨厠,杩樺墿涓1/2a+4-3/8a-17/3=1/8a-5/3鍗冨厠娌 鏍规嵁棰樻剰 1/8a-5/3+50-a=1/3 48=7/8a a=384/7鍗冨厠 鍘熸潵鏈夋补384/7鍗冨厠 10銆佺敤涓鎹96绫崇殑甯冧负鍏勾绾ф煇涓彮鐨勫鐢熷仛琛ｆ湇,鍋15濂楃敤...
