98x∧23x20
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48x20%+x=1248x0.2+x=12x=12-9.6x=2.448x20%+x=129.6+x=12x=12-9.6x=2.448x20%+x=12解:9.6+x=129.6+x-9.6=12-9.6x=2.4
45X=(X+5)X20咋算45X=(X+5)X2045x=20x+10045x-20x=10025x=100x=445X=(X+5)X2045x=20x+10045x-20x=10025x=100x=445X=(X+5)X2045x=20
(1.5-x)x20等于10怎么算(1.5-x)x20=101.5-x=0.5x=1
X+2.5×2.25%X=56254=X-X20%题目1大概写错了吧、做出来都有小数点的:X+2.5x2.25%X=5625X+2.5x0.0225X=5625X+0.05625X=5625(1+0.05625)X=56251.05625X
30x=(X+5)x20要方程解30x=(X+5)x2030x-20x=10010x=100x=100/10x=1030x=(X+5)x2030x=20x+10030x-20x=10010x=100x=1030x=20x+10030x-20
x×30%+(420-x)x20%=102
(x+0.1)x20等于39.x等于多少?X=1.85
(X-75)x20=(x+100)x15怎么算20x-1500=15x+15005x=3000x=600
解方程,(36-x)x20%=25%xx=16左右*204*(36-x)=5*x移向,x=16x=0x=35.75
5%x+500x20%=(500+x)x15%怎么解5%·x+500·20%=(500+x)·15%移项15%·x-5%·x=500·20%-500·15%10%·x=500·5%0.1x=25x=250(15-5)x=500(20-15)
12Xx25%+(3200-12X)x20%=70012Xx25%+(3200-12X)x20%=70012Xx5+(3200-12X)x4=700×2060x+12800-48x=1400012x=1200x=100
12Xx25%+(3200-12X)x20%=70012Xx25%+(3200-12X)x20%=700等式同乘20,得:12Xx5+(3200-12X)x4=700×2060x+12800-48x=1400012x=1200x=100
15x(17x20)怎样简便计算原式=15×20×17=300×17=510015×17×20=15×20×17=300×17=510015×20×17先把括号里的算出来15x340先把20提出来乘以15,再乘以17
(x-1.5)x20=10用方程解(x-1.5)×20=10x-1.5=0.5x=0.5+1.5x=22
1/20x+x=x-x20%+10这个方程怎么解1/20x+x=x-x20%+100.05x+x=0.8x+100.25x=10x=10/0.25x=401/20x+x=x-x20%+100.05x+x=x-0.2x+100.25x=10x
解方程10%X+30%XX(1000-X)=1000X20%*表示乘原式,40%(1000-x)=1000*20%400-40%x=200-40%x=-200x=500
(X+50)x20+2000=30X,这个方程怎么解?(X+50)×20+2000=30X20X+1000+2000=30X10X=3000X=30020x+1000+2000=30x20x+1000+2000=30x10x=3000x=3
4x35%+3(21-x)=(15——2x)x20%-14x35%+3(21-x)=(15-2x)x20%-11.4+63-3x=3-0.4x-164.4-3x=2-0.4x-3x+0.4x=2-64.4-2.6x=-62.4x=24
20x15%+x=(20+x)x20%这个方程怎么解20x15%+x=(20+x)x20%3+x=4+0.2x0.8x=1x=1.25
(1/2005x1/2004x1/2003x...x1/3x1/2x1)^2005x(2005x2004x2003x...x3x2x1)^20051(1/2005x1/2004x1/2003x...x1/3x1/2x1)^2005x(200