解方程:①19-120%X=7 ②(1-25%)X=36 ③3/4X-50%X=17.5 ④8.5x+1.5=1000%
解方程:①19-120%X=7 ②(1-25%)X=36 ③3/4X-50%X=17.5 ④8.5x+1.5=1000%
①19-120%X=7 ②(1-25%)X=36 ③3/4X-50%X=17.5 ④5X+1.5=10
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
解方程 ①x²+10x+25=7 ②x²+4x=10 ③ x²-6x=11 ④ x&sup
用分解因式法解方程①4x(2-x)=3(2-x)②3(x-1)x=2-2x③4(x+1)^2=9(2x-1)^2④(x-
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/
解几个方程,①x(x+1)(x+2)(x+3)=3 ②x^4+8x^3+14x^+8x+1=0 ③x(x+1)(x^2-
解方程(x²-x+4)x-(x-1)(x²+2)=x+7
解方程 x(2x-4)+3x(x-1)=5x(x-3)+8
解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7)
解方程】(x+8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)