3(x-6)-9[2-2(2-x)]=45
5个回答
3(x-6)-9(2-4+2x)=45
3x-18-18+36-18x=45
-15x=45
x=-3
相关问题
(1/6x-45)-(1/6x+45)-(3x/45^2-9x^2)
方程(3/X)+(6/X-6)-(9X+45/X^2-X)=0的解是..
(x^2+3x+9)/(x^2-9)+6x/(9x-x^2)-(x-1)/(6+2x)
(1)14x^2-45x-14 (2)18x^2+3x-10 (3)8x^2-18x+9 (4)10x ^2-11x-6
(3.6+x)*60%=7.2 x+30%x=90%x+30 45%+(9.6-x)=5.7
(x2+3x+9)/(x2-27)+(6x)/(9x-x2)-(x-1)/(6+2x)
计算x2+9xx2+3x+x2−9x2+6x+9.
6x^2+9x+根号2x^2+3x-2=6
若x=2√2,化简求值√(x^3-6x^2+9x),√(x^3+6x^2+9x)