6÷30+x/22.5+(66-x)/36
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![6÷30+x/22.5+(66-x)/36](/uploads/image/z/1007967-39-7.jpg?t=6%C3%B730%2Bx%2F22.5%2B%2866-x%29%2F36)
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6÷30+x/22.5+(66-x)/36
6÷30+x/22.5+(66-x)/36
6÷30+x/22.5+(66-x)/36
=5+2x/45+66/36-x/36=41/6+x/60
6÷30+x/22.5+(66-x)/36
(x^2-x-6)÷(x-3)
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x)
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
(2x-6)/(x²-4x+4)÷(3-x)/(x²+6x+9)×(2-x)/(x+3)
求x^2-3x/x^2-6x+9*x^2-11x+30/x^2-5x-1
30+(-x)²+6x(x+2)>-x(2x+3)+(-3x)² 解不等式
1/x(x+3)+1/(x+3)(x+6)+---+1/(x+27)(x+30)
解方程:(x-3)÷2=7.5 3x+x=30 15x+x=40 2.5x-6=18.5 3x+7=59.2
1.(x-3)÷2=7.5 2.3x+x=30 3.15x+x=40 4.2.5x-6=18.5 5.3x+7=59.2
x^2-x/x+1÷x/x+1 ;x^2+6x+9/x^2-9÷x+2/x-3;2/a÷4/a
2x^2-4x/x+2`x^2+2x/x^2-4x+4÷x/3x-6,其中x=根号3/2
2x^2-4x/x+2`x^2+2x/x^2-4x+4÷x/3x-6,其中x=根号3/2
计算①x²-4/x²-4x+3÷x²+3x+2/x²-x②2x+6/4-4x+x²÷(x+3)·x²+x-6/3-x
解方程:8x -4.5÷0.2=16 3(x+30)=6x+30 3-(5-2x)=x+273x-(67-84x)-14=76 15-(7-5X)=2X(11-3X) X+(X+10)+(x+8)=36×3 11×(4-x)+15×(4-X)=30
x^2-4x+4分之2x-6÷(x-+3)×3-x分之x^2+x-6计算