5x=25*4-15x 7x-x+2*3=29.4 (28.8+5.5x+3.2)/2=71 方程解
5x=25*4-15x 7x-x+2*3=29.4 (28.8+5.5x+3.2)/2=71 方程解
解方程:5x=25×4-15x和7x-x+2×3=29.4和(28.8+5.5x+3.2)÷2=71
解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7)
解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
方程(x-1/x-2)-(x-3/x-4)=(x-2/x-3)-(x-4/x-5)解为x=7/2,(1/x-7)-(1/
解方程:2(X-3)(X+5)=X平方+(X+2)(X-2)+(X+7)
解方程 x(2x-4)+3x(x-1)=5x(x-3)+8
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
解方程(x+1/x+2)-(x+2/x+3)=(x+5/x+6)-(x+6/x+7)
解方程:x+2/x+1-x+3/x+2=x+6/x+5-x+7/x+6