3.25+2.5x=8.75
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3.25+2.5x=8.753.25+2.5x=8.753.25+2.5x=8.753.25+2.5x=8.752.5x=8.75-3.252.5x=5.5x=2.2
3.25+2.5x=8.75
3.25+2.5x=8.75
3.25+2.5x=8.75
3.25+2.5x=8.75
2.5x=8.75-3.25
2.5x=5.5
x=2.2
3.25+2.5x=8.75
请问,这几道关于一元一次方程的题目,我做对了没有?(1) 3X+0.5X=10.53.5x=10.5X=3(2) 5X-2X=93x=9X=3(3) X+6x+5x=1812x=18X=1.5(4) 10x-4.5X=2.5乘以3.55.5x=8.75X=1.59(5) -6.5X=2.5乘以3.5-6.5x=8.75X=-1.34
X+25%X=8.75
x+x-2.5+x-4=85
3.6x-x=3.25
(x-1.5):x=3.25:
3.6x-x=3.25
2*x*x+2.5x=13 x=?
2.5x-x=15
x =2.5(x-180)
X乘X减2.5X=6, 求X!
解方程:4-2.5x=1 18-2.5x=6 3.6x-x=3.25 2(x-3)=5.8
3道简单的分式方程,1.3/(1-x^) = 2/(1+2x+x) - 5/1-2x+x^2.5x/(x^+x-6) + (2x-5)/(x^-x-12) = (7x-10)/(x^-6x+8)3.(x+1)/(x+2) + (x+6)/(x+7) = (x+2)/(x+3) + (x+5)/(x+6)
(X+X)+(X-X)+(X*X)+(X/X)=100
z=0.015x*x+y*x*0.05+(1-x-y)*2.5*(x+y) x>0.35.xy>0.70x+y
2x:16-2x=2.5x:20-2.5x x=爱克斯(未知数)
1.6x十x=3.25.x=?
(3.25-x)+(5.75-x)+7.5=15