解方程(3x+2y)/4=x+1/3y=3(x-2)+y
解方程(3x+2y)/4=x+1/3y=3(x-2)+y
用代入法解方程2(x-y)/3-(x+y)/4=-1① 6(x+y)-4(2x-y)=16②
解方程x+y+(x+y/2)=15 3x+5y+4(x+y/2)=62
(x+y)-(x+y)平方 因式分解 解方程 2x²=3x (3x-1)² - 4=0 5x-15x
不解方程2x+y=6,x-3y=1,求7y(x-3y)^2-2(3y-x)^3 的值
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
解方程(3x+2y)/4=(2x+3y)/5=(x-1)/6
已知:3x=8y.求(1)x+y/y (2)2x+3y/x-2y
解方程:1){x-1=3(y-2)2(x-1)=5y-18; 2)2x+3y/4+2x-3y/3=7,2x+3y/3+2
解方程3(x-1)-4y=8,2(y-3)=2(x+1)-14 已知(x-y)/4=(2x+y)/5,且2x-3y=18
解方程(1)x^2+2xy+y^2-4x-4y=5,x^2-2xy+y^2-2x+2y=3 (2) xy+x+y=34,