4.2X- 2.7×4=6X-15.8
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![4.2X- 2.7×4=6X-15.8](/uploads/image/z/1640418-42-8.jpg?t=4.2X-+2.7%C3%974%3D6X-15.8)
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4.2X- 2.7×4=6X-15.8
4.2X- 2.7×4=6X-15.8
4.2X- 2.7×4=6X-15.8
4.2X- 2.7×4=6X-15.8
4.2X- 10.8=6X-15.8
6X-4.2X=15.8-10.8
1.8X=5
X=5÷1.8
X=25/9
4.2X- 2.7×4=6X-15.8
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
2x+3x+4x+5x+x+6x+7x=100
(x/x-2)+(2/x*2+2x)-(x+6/x*2-4)化简,=x^2/x(x-2)+(2x-4)/x(x^2-4)-(x^2+6x)/x(x^2-4)=x^2/x(x-2)-(x+2)/x(x-2)=(x-2)(x+1)/x(x-2)=(x+1)/x
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
x^-6x+5=x+4
1.用公式计算:COSX=1-X*X/2!X*X*X*X/4!-X*X*X*X*X*X/6!.直到最后一项的绝对
解方程:1.x/2x-3+5/3-2x=4 2.7/x+x+1/x-x=6/x-1
*-----------------------------------------------*| 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 ||
4.2-0.6x=3.6x 5x+2x=33.6 7x-4x=0.75 2x+7x+2.1=12 56x-32x-119=361 x+5=2x 3x+9=6x 4x-28=2x 2x+18=7x 5x=25*4-15x 7x-x+2*3=29.4 (28.8+5.5x+3.2)除2=71
4x^-4x+1=x^+6x+9
4x-4x+1=x+6x+9
6x+4x+8x=32 x=?
4^x-6^x-9^x=0 x=?
27046=2x( )+7x( )+4x( )+6x( )
[3/x]-[4/x-1]=6/x-x²
X+X-6+X-4+X/2=60