X-(1/5X+15)*2-19=1/5X+15 求解
X-(1/5X+15)*2-19=1/5X+15 求解
7x-3(2/3x+1/5x)-(x+2/5x)+2x 求解?
求解方程1-x-2/3=1-x/5
5sin^2(X)+sin(2X)-cos^2(X)=1, 求解X
数学题.求解:3x+5/2=2x-1/3求解:X-3/-5=3X+4/15求解:3Y-1/4=5Y-7/6求解:5Y+4
求解二元一次方程组(1){x/3 + y/5=1{3(x + y)+ 2(x - 3y)=15(2){0.8x - 0.
1/(X+2)+1/(X+5)=1/(X+3)+1/(X+4)江湖救急,方程求解!
求解方程(x-1)/(x²-5x+6)+(x-2)/(x²-4x+3)=(x-3)/(x²
3x+5/2=2x-1/3求解:X-3/-5=3X+4/15求解:3Y-1/4=5Y-7/6求解;5Y+4/3+Y-1/
求解不等式 -3x²+5x-4>0 x(1-x)>x(2x-3)+1
求解方程:5:6x=15
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550