2(x+y)-10=4x (1+10%)x+(1+15%)y=17解方程组
2(x+y)-10=4x (1+10%)x+(1+15%)y=17解方程组
解方程组,√(x+1/y)+√(x-y-2)=4 2x-y+1/y=10
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
解方程组 10(x-y)=3(x+y)+15 6(x+y)=4(2x-y)+16
解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12)
10/x+y+3/x-y=-5 15/x+y-2/x-y=-1(用换元法解此方程组)
解方程组(1)2x-3y=10,-4x+y=5 (2)3x-2y=15,5x-4y=23
解方程组 2x+y=(4x-y-1)/2=(10+6x+2y)/4
解方程组 2x+y=4x-y-1除以2=10+6x+2y除以4.
解方程组x+y=15 (x+15%x+y+10%y)=17
解方程组X+Y/2=3X-2Y=10+6X+Y/4
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1