x/3-16=y/10
解方程组 10(x-y)=3(x+y)+15 6(x+y)=4(2x-y)+16
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuai
方程组 共四题 3x-4y=10 x+2y+2=0 5x+6y=42 7x-4y=-41 3x+4y=16 3x+5y=
解方程组:(x+y)平方-3(x+y)-10=0 x平方-8xy+16y平方=25
3x+4y=6①,x+2y=4② 2x+5y=16①,8x-7y=10②
y=x(16-3x) (0
{2x+y+Z=10 {2x+4y+3z=9 {2x+2y+2=16{3x+2y+5z=11 {x+y+2z=8{5x+
3分之2(X-Y)-4分之X+Y=-1,6(X+Y)-4(2X-Y)=16
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
4x-(2x+y+16)/2=-6y 2x+3y=7-x-2y
解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12)
用加减法解方程组:{(x+y)/6+(x-y)/10=3 (x+y)/6+(y-x)/10=-1