[试题]解下列方程:(1)5x/12-x/4=1/3(2)2/3-8x=3-x/2(3)0.5x-0.7=6.5-1.3x(4)(3x-6)/6=2x/5-3(5)3(x-7)+5(x-4)=15(6)4x-3(20-x)=-4(7)(y-1)/2=2-[(y+2)/5](8)(1-2x)/3=2(3x+1)/7
[试题]解下列方程(1)x/4-1/2=3/4(2)(7x-5)=3/8(3)(2x-1)/6=(5x+1)/8(4)(x/2)-7=(9x-2)/6(5)x/5-(3-2x)/2=1(6)(2x+1)/3-(5x-1)/6=1(7)(2x+14)=4-2x(8)3(200+x)-2(300-x)=300×(9/25)
解下列方程:(1)x2+x=0;(2)x2-2√3x=0;(3)3x2-6x=-3;(4)4x2-121=0;(5)3x(2x+1)=4x+2;(6)(x-4)
解下列方程:(1)x2+10x+9=0;(2)x2-x-(7)/(4)=0;(3)3x2+6x-4=0;(4)4x2-6x-3=0;(5)x2+4x-9=2x-
线性方程组 ) (x)_(1)+2(x)_(2)-2(x)_(3)=1 2(x)_(1)+4(x)_(2)-4(x)_(3)=2 3(x)_(1)+6(x)_
[试题]解下列方程:(1)12(2-3x)=4x+4;(2)6-3(x+2/3)=2/3(3)2(200-15x)=70+25x(4)3(2x+1)=12.
用消元法解下列线性方程组:-|||- x1+3x2+5x3-4x4 =1, x1+3x2+2x3-2x4+x5=-1, x1-2x2+x3-x4-x5=3, x
已知非齐次线性方程组 ) (x)_(1)-5(x)_(2)+2(x)_(3)-3(x)_(4)=11 5(x)_(1)+3(x)_(2)+6(x)_(3)-(
[主观题]解下列方程。X-5/6=1X+3/7=3/4X-5/12=3/8
3.已知方程组 ) (x)_(1)+(x)_(2)+2(x)_(3)=a 3(x)_(1)-(x)_(2)-6(x)_(3)=a+2 (x)_(1)+4(x